Working in Movement

... because everything involves movement

New Blog

Be sure to visit Breathe In, Breathe Out, my newest blog. 

Eyes (and Other Senses) in the Back of Your Head

Ever heard of peripersonal space? It’s “the bubble of space around a person’s body that his brain as part of him in its map of his body.”

Body map? Yeah, it turns out that the human brain is filled with representations of the body and the environment it finds itself in. The maps are for both sensing and for moving. It’s these maps that you use to move your arm or leg, and not the muscles that reside there, at least not directly.

Sandra and Matthew Blakeslee beautifully and clearly describe the ideas of body brain maps in The Body Has a Mind of Its Own: How Body Maps in Your Brain Help You Do (Almost) Everything Better. I just finished an initial reading yesterday, and I plan to have much more to say about this wonderful book. Lots of very rich Feldenkrais-related material here.

But what reminded me of it was this New Scientist post on an experimental headband that helps its wearers sense physical stuff around them when blindfolded. There are even some video illustrations. And the New Scientist post mentions other sources of information about this sort of contraption.

It’s not hard to predict that these sorts of haptic devices will be widely available, probably pretty soon. What’ll be really interesting is when they hit the consumer market. All sorts of athletic applications, I’d think.

But most interesting to me is what kind of effect it’ll have on kids as they develop. Maybe the term “eyes in the back of the head” will be more than a metaphor in the future.

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Not Your Father's Nursery School

   

“If your goal is to get your kid into an Ivy League school, this is definitely the wrong place to be,” Goldman said. “But we hope the kids will be so well educated that they get into any place they want.”

i_dl_3bluemen I’d never have guessed that quote came from one of the founders of the Blue Man Group. But it did, because these three guys have started a nursery school heavily influenced by the Reggio Emilia educational approach that emphasizes kiddie creativity. But they’re also including Blue Man Group stuff:

During a trial run of the center for a group of two- and three-year-olds last year, Goldman and Wink experimented with incorporating actual bits of Blue Man Group business into the curriculum. They decided against teaching their pupils how to catch paintballs in their mouths (“Maybe in second grade,” Goldman said), but they did adapt their spin-art routine, which involves a Blue Man spitting paint onto a canvas rotated by his fellow Blue Men, as an exercise in cooperation. “By the end of the experience,” Wink said, “they got to a tribal place.”

OK, then.

Can’t wait for the Cirque du Soleil school. Might be fun, but gym class could be tough.

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Effects of Mismatched Sensory Information

Ever get “car sick” when reading in the backseat of a moving car? It’s happened to me ever since I was a little kid, and I’ve always wondered why it happens.

Turns out it’s probably the explanation for out-of-body experiences that you sometimes read about. No, I’ve never had one of those. But if I had, it would be for roughly the same reason as the car sickness from reading.

In both cases, the sensations are produced by a mismatch of sensory information reaching the brain.

Motion sickness, says journalist Scott McCredie in his new book Balance: In Search of the Lost Sense usually occurs when what you see and what your vestibular system senses don’t agree. It’s called the sensory conflict theory.

For example, my eyes aren’t following the motion of the car as I’m reading, although the balance organs on my inner ear are on board with the motion. That’s a mismatch and my gurgling stomach sends me a strong indication that something’s wrong.

McCredie gives other examples. In WWII, it wasn’t unusual for airplane navigators to get sick while the pilots didn’t. Both could sense the motion of the airplane, but the navigator couldn’t see the movement out of a window since he was in the windowless interior of the plane.

The out-of-body experiences were produced in two separate but similar virtual reality experiments. But in both cases, the out of body sensation resulted from a mismatch of sensory information. This time it was between seeing and feeling touch.

The method involved having subjects look at visual projections of themselves through a special set of video goggles. Experimenters then simultaneously stroked the subject and the image they were viewing. When this happened, subjects reported sensing they were outside of themselves and instead inhabiting the observed image.

This was kind of a whole body adaptation of the rubber hand experiment that I first heard of in Ramachandran’s Phantoms in the Brain.

To be sure, this sensory mismatch isn’t the only explanation for motion sickness. There are many structural, chemical or biological sources for the misery.

And who knows if sensory mismatch is the only explanation for the out-of-body sensation?

People who participated in the experiments said that they felt a sense of drifting out of their bodies but not a strong sense of floating or rotating, as is common in full-blown out of body experiences, the researchers said.

What is clear is how easily an illusion can crop up from seemingly innocuous circumstances. And sometimes, it’s done on purpose, as in magic shows. For a well-written and fascinating look at how easily attention can be manipulated, see Sleights of Mind.

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Uncle Albert and Plasticity

Quick. What do Elvis and Einstein have in common? Well, their estates are both making oodles of money from them, long after their deaths. Elvis inclusion on the profitable dead celebs list makes sense, but how did good old Albert find himself along side the king of rock and roll?

Turns out that Einstein’s image is plastered all over a best-selling line of interactive videos for babies and toddlers, Baby Einstein. And if you’re going to use the image and name of the king of relativity, you gotta pay for the privilege.

Thankfully, Albert’s not around to see the current controversy released with a study suggesting watching the Baby Einstein video isn’t without a downside.

Now brain plasticity pioneer Michael Merzenich weighs in on the controversy from a plasticity perspective. As I read it, he takes the University of Washington researchers to task mainly for findings that seem little more than a blinding flash of the obvious - at least from a plasticity perspective.

Brain plasticity is driven by whatever it is that we do. And when we spend a lot of time doing one thing, we sacrifice time for doing something else that might also have a plasticity effect. “Fire together, wire together,” as they say.

It does make sense that a baby or toddler spending a lot of time with interactive visual and movement material might develop in a certain way and not others:

I suspect that they could also EASILY scientifically demonstrate that Baby Einstein graduates are particularly fond of visual media and are even more avid-than-usual video game players on the statistical average than are non-exposed kids. And I suspect that those later years of time spent away from language and social interactions at passive viewing and active video game playing shall exaggerate and widen the limitations in language and social development initially arising through video exposure in infants and toddlers.

But Merzenich adds a refreshing dose of common sense to all this by concluding with that the videos are both good and bad for kids. It just depends on what the parent wants for the kid.

YOU decide, for your kid, if the expected consequences of such heavy infant exposure are contributing to biasing them in what YOU regard as a positive or negative direction. On the whole, for my own children, thinking forward to the consequences of biasing the infant toward being in love with passive viewing and electronic media in later life, I would vote ‘no’. For YOUR kid, that could be the wrong answer.

It’s all relative, I guess.

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Video of Backward/Forward Treadmill

Thoughts on Learning Movement skills described a very non-traditional treadmill that produced some interesting effects on research subjects who walked on it. Pretty thought-provoking stuff, but not the easiest thing to visualize in action. 

Fret no more. Here's a video that shows how it works.



Thoughts on Learning Movement Skills

There’s this really wacky treadmill in Maryland that might be changing how we understand the brain’s control of walking. Needless to say, this is pretty exciting for offering therapy for brain injured people who’ve had trouble walking. But, at least to my way of thinking, the implications might also extend to athletic and performance instruction.

What makes the treadmill wacky is that it can go forward and backward — at the same time! Instead of one belt turning under a walker, this thing uses two, one for each leg. The belts can turn in different directions and at different speeds. Sounds like patting you head and rubbing your stomach at the same time, but volunteers participating in a study at the Kenney Krieger Institue quickly adapted to it.

In fact, they adapted so well that they couldn’t stop the odd walking pattern the treadmill had required of them, even when they got off of it. It took about 15 minutes for their brains to adapt and resume their regular walking gait.

The odd pattern of the treadmill had disrupted their brain’s walking pattern and put the new one in it’s place. And they weren’t able to consciously override it.

Researchers who conducted the treadmill study concluded that there are different and separate brain systems that control each leg during walking, and each direction, forward or backward. I understand this is contrary to the current theory of walking control.

There are some pretty exciting implications for therapy here. According to the lead author:

“The notion that we can leverage the brain’s adaptive capacity and effectively ,dial in, the patterns of movement that we want patients to learn is incredibly exciting,” said Dr. Amy Bastian, senior study author and Director of the Motion Analysis Laboratory at the Kennedy Krieger Institute. “These findings significantly enhance our understanding of motor skills, effective therapeutic approaches and the true adaptive nature of the brain.”

But I wonder if these findings might also apply to learning or refining movement-based skills, like those in athletics or performance arts. After all, the treadmill effectively completely disrupted habitual walking patterns and put new ones in their place, at least temporarily.

And here’s the key thing — this “learning” happened without conscious thinking from the treadmill walkers. No figuring out how to do a certain step, like you might do in dance class. The new pattern just happened, then went away.

How could this sort of thing be used in skills instruction? By disrupting a habitual way of performing a skill, old ways of interfering with learning new patterns would be removed automatically. Seems to me that this “new state” would be more conductive to learning a different motor pattern.

And though this new state might be temporary, it would still allow a way to actually feel what it’s like to make a certain movement without habitual ways of interfering with it. The key here would be in developing and using enough awareness during the temporary period.

This would go well beyond just getting feedback while learning. And, for sure, it would be a whole lot better than the traditional “demonstrate and imitate” method used by many instructors.

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Learning: A Moving Experience

I’ve always moved my hands around quite a bit while I talk. Other kids made fun of me. I chalked it up to being Italian, since that was a common stereotype of the time that Italians talked a lot with their hands.

I never thought of using my hands as a learning aid, at least not in my early school years. Sure, I could count on my fingers (and toes) to learn simple arithmetic. But when it came to memorizing multiplication tables and such, moving wasn’t encouraged. “Sit still and memorize - that’s the ticket to learning how to handle numbers.”

Good thing they invented calculators, I think.

But it turns out that using your hands may actually help you learn how to handle numbers better. That’s at least according to a report on a new study released last week.

When learning to solve simple equations like 5+3+6= __+6, kids who were taught to move their hands under each side of the equation learned better than those who kept still. Actually, 85% of the hand-waving kids retained their ability to solve the equations a few weeks later, while only about a third of the speech-only kids remembered.

So why does the hand movement help retention? Lead author Susan Cook thinks it might help us tie what’s in our minds with what we’ve experienced in the world:

“My intuition is that gestures enhance learning because they capitalize on our experience acting in the world,” says Cook. “We have a lot of experience learning through interacting with our environment as we grow, and my guess is that gesturing taps into that need to experience.”

Life is just a moving experience, I guess.

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The Puzzle of Peer Pressure

We all know people can easily resist pressure from friends overtly or implicitly urging us to do something. And we know people who can't. 

A recent widely reported study even suggests that obesity gets transmitted this way, from friend to friend. Not any organic thing, but as ideas about what’s acceptable body image and behavior stuff. Not really that surprising when you stop to think about it.

But what is it that makes some of us so eager to go along with the crowd? Another recent study looked into what was happening in the brains of kids who described themselves as resistant to peer pressure and those who said they weren’t resistant. Turns out the peer-resistant kids had less brain activity, but a more coordinated brain pattern than those who said they weren’t peer-resistant. So there is at least some neurological component at work here, at least as far as kids looking at pictures inside an fMRI. That is, until someone comes along with another study that says just the opposite. (It happens.)

What this really opens up for me is a nature/nurture question. If you really can resist peer pressure, is it because of structural things going on inside your brain, or because your environment has provided opportunities to learn to just say no when the overwhelming sentiment is to say yes. Probably it’s some combination.

I’m hoping that The Agile Gene will be able to shed some light on this sort of thing. Author Matt Ridley writes with a kind of clarity and flair that makes reading about science and philosophy more fun than you’d think it would be.

Interestingly, I first head of Ridley while driving and listening to a podcast of All in the Mind from ABC radio in Australia. Unable to resist the pressure to get his book, I veered into the parking lot of a Borders bookstore that happened to have it in stock.

I just couldn’t say no.

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Older, Heavier Cyclists

The Bicycling Paradox: Fit Doesn’t Have to Mean Thin tells us how and why older and heavier athletes can thrive on the bicycle, but wilt in a pair of running shoes.

I find this interesting because I’m in the second month of a new fitness program. Seems as though the year I took off from working out had caught up with me - girth-wise and stamina-wise. With the help of a wonderful trainer, I’m hefting weights, walking on the treadmill and riding a challenging exercise bike.

I had thought I wouldn’t like the bike, maybe find it too boring to continue for very long. But the bike turns out to be kind of a pleasant experience, even when I’m drenched in sweat and furiously pumping the pedals for all I’m worth.

Turns out that I’m not the only older, heavier athlete favoring the bike as fitness machine. And the Times article provides a clue as to why plump codgers like me might find it more forgiving to pedal than to run or even walk long distances.

It’s got something to do with how you use your center of gravity in cycling rather than running.

“In running, when you see someone who is obviously overweight, they will be in trouble,” Dr. Hagberg said. “The more you weigh, the more the center of gravity moves and the more energy it costs. But in cycling, there are different aerodynamics — your center of gravity is not moving up and down.”
The difference between cycling and running is like the difference between moving forward on a pogo stick and rolling along on wheels. And that is why Robert Fitts, an exercise physiologist at Marquette University who was a competitive runner, once said good runners run so smoothly they can almost balance an apple on their heads.<

And I’m thinking it doesn’t matter a heck of a lot if the wheels are rolling or stationary - as long as you can adjust the tension to pedal a little harder.

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On Imitation as a Learning Device

Demonstrate and imitate. That’s the time honored method of teaching and learning lots of performance or athletic skills. Sometimes it works, and most times not, in my opinion.

But for sure imitation is not going to work for someone who actually lacks physical capacity to perform the movement being demonstrated. If you don’t have arms, it’s impossible to imitate raising your arm.

Only the brain doesn’t really work that way, at least according to a just-released research study. What happens instead has to do with goals rather than just duplicating a given movement.

The researchers ask people without hands or arms to mimic video of various hand movements, as they watched scanned images of what was happening in the aplasic brains. The aplasic brains lit up with activity all right, but it was in areas associated with their feet instead of hands.

The results underscore that the mirror neuron system isn’t mindlessly imitating, but working toward a goal, he says. The two people without hands or arms recognized they could lift a cup with their feet—and their brain lit up accordingly.

That’s pretty interesting, and maybe even a bit amazing. But it go me wondering about using demonstration and imitation in learning skills more complex than such simple movements.

I’ve never been a real big fan of the demonstration and imitation approach to learning performance or athletic skills. And especially if you’re paying big bucks by the hour to have some expert show you how it done.

Maybe I’m not alone here.

Music professor Robert Duke offers a kinder, gentler approach:

In teaching, often a student will do something, then the teacher tries to fix it by simplifying it a little, then having the student try again, Duke said. If that doesn’t work, we make it a little more simple, and try again. This can keep going: simplify, try, simplify try. Maybe we do it eight times before it’s simple enough for the student to accomplish. Then once they get it, we go back to the passage and have them try again.
During this process, with each failed attempt, “the learner is thinking: wrong, wrong, wrong, wrong….,” Duke said. “Rather than inch back and then leap forward, we should leap back, and then inch forward,” Duke said. “Leap back to a task that is very accomplishable.” This doesn’t always mean to play something slower. It can mean to play it in rhythms, or to work on the fundamentals of the technique involved. Either way, the student needs to be able to achieve success, there in the lesson. “How is a student going to do, ALONE, what you can’t get them to do in your studio in 20 minutes?” Duke said. “This principle goes across all levels: set them up in a way that they can do the thing we demonstrate.”

From: http://www.violinist.com/blog/laurie/20076/7046/

So how does this tie into the research study talked about earlier? I’m not really sure if there is any kind of direct tie here. It might be interesting to look at brain scans of students using Duke’s approach. But, hey, it’d probably be hard to get the piano into a scanner.

Probably similar brain patterns are at work, though.

What’s most interesting is the piano students are imitating to learn. Only they are imitating themselves in earlier successful situations.

As Yogi Berra says, “you can observe a lot just by watching.” And you can learn a lot from yourself, if you know what to pay attention to.

Kid Vid: Good for Kids?

It’s fun shopping for a gift for a baby or toddler. Good excuse to “test drive” all those great toys you find in the toy superstores and the like. But sometimes the gift turns out not to be a toy at all, but something “good” for the little tyke. Like maybe an educational video like those from the Baby Einstein line, for example.

Video produced for educating and enhancing babies and toddler has become a big business. Really big, as in billion dollars a year.

And the babies and toddlers are watching at increasing rates, spurred on by well-meaning parents who say they believe the videos teach the kids stuff, are good for their little brain’s development and, besides, the kids giggle and wiggle while they watch the screen.

A new study from the University of Washington has revealed that 40 percent of 3-month olds watch an average of 45 minutes a day, or 5 hours a week. And by age 2, 90 percent are watching an average of 90 minutes a day.

But are these videos really as educational and nurturing as some parents think? Maybe not. Well, definitely not, according to U Dub pediatricians who authored the study.

Such early exposure to screens can have a negative impact on an infant’s rapidly developing brain and put children at a higher risk of attention problems, diminished reading comprehension and obesity, researchers say.

What’s ironic here is the good intentions gone awry. Parents may think they’re helping their kids brain development, but they may be confusing the kiddies’ orienting and survival responses for interest in what’s happening on the screen.

What parents identify as attention and learning, scientists say is a primitive reflex known as the orienting response.
“Yes, the baby is staring at the screen, but it’s wrong to think the child likes it,” says (author) Christakas.

The study authors go on to suggest that excess viewing of the videos will turn the kids into couch potatoes, taking their attention and activity away from more healthy pursuits as they develop and grow

But I wonder. Are these speculations based on research or more on common sense? Has anyone done research over time, following the same kids to actually see what happened to the little heavy viewers as they grew?

I remember hearing an interview with anatomist and body worker Thomas Myers who concisely summed up these sorts of dilemmas. Myers said something like, “The problems we face are using bodies and brains suited to a neolithic environment in an electronic age.”

That seems to be a good statement of the sort of problems pointed to by the study and its authors. What to do about it is more up in the air.

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Eyes on the Ball

What do you do when you want to improve on some athletic skill, say putting a golf ball or shooting free throws in basketball? Well, you could seek out a teacher to refine your biomechanics. You might hire a personal trainer of some sort to help improve your strength and flexibility.

Or, you could adjust your eyes to look at particular spots while you’re putting or shooting.

Huh?

Ya, that’s what I thought when I first stumbled on the work of Canadian researcher Joan Vickers. Vickers has studied where people look (where they focus their gaze, as she calls it) in a variety of athletic situations.

Not really that surprising, Vickers found more accomplished athletes use their eyes differently than beginner or the less accomplished.

Vickers uses a computer-based contraption that sort of resembles Darth Vader’s helmet. It’s basically a transparent visor attached to a helmet worn by research subjects. As the subject looks through the visor at the putting green, basketball court or whatever, an attached computer tracks the location of the subjects pupils — it let’s Vickers know where the subject is looking.

If you’re not getting the picture, so the speak, there’s a really marvelous Scientific American Frontiers episode titled On the Ball that you can watch on the PBS website.

Host Alan Alda demonstrates Vicker’s device on camera. Vickers takes Alda through sequences of putting and free throw shooting. Alda improves quiet dramatically by practicing Vicker’s advice on where to focus his gaze:

  • In the free throw shooting, it’s focusing briefly on a very specific part of the basketball rim before launching the shot. Alda gets so good that he makes one on-camera shot facing away from the basket and heaving the ball backward over his head. Nothing but net.

  • In golf, it’s focusing on the hole, and then on a very specific part of the golf ball, maybe the back of the ball. And when making contact with the ball, keeping the gaze on that same, exact spot instead of lifting the eyes to look at where the ball’s going.

I suspect there’s a lot of eye tracking going on with teams, athletes and coaches. Vickers’ approach is just one.

In an earlier post, I mentioned the work of Australian Damian Farrow, a researcher who’s teaching “field sense” to all sorts of athletes down under. But he’s also using the eye tracking methods:

Farrow spends a lot of time simply trying to determine what it is experts see that amateurs don’t. Among other things, he uses an eye-motion tracker to record where virtuoso players are looking during clutch situations, such as when passing under pressure from multiple defenders coming from different directions. He pulls up a videoclip from an Australian rules football practice that he conducted with the Adelaide Crows, a professional team. The game is essentially football crossed with rugby, and players advance the ball by kicking it to teammates. As the play unfolds, players break left and right. One runs very visibly up the middle. Onscreen, a crosshair flits around. This is the darting sight of the Crows’ kicker: a zigzag that covers the field, with minute pauses at key moments, like when he’s assessing the openness of a potential receiver. Farrow’s frame-by-frame analysis compares where good and bad kickers look and for how long. “We want to know, at what points are the experts doing something differently? When are they looking somewhere that the less skilled players aren’t?” Farrow has found that players who make poor decisions tend to glance at targets, rather than pausing on them. They’re also more drawn to motion. “In a lot of team sports, you’re attracted to the area of greatest movement,” Farrow says. “But just be-cause there’s a person running fast and waving his arms doesn’t mean he’s the best person to kick to.”Wired: Teaching Field Sense

If you want more specifics of how Vicker’s suggests applying her technique to different sports, see a transcript of her interaction with the audience for the On the Ball program.

Perhaps most intriguing is her advice to a mother of an ADHD kid who wants to improve his baseball skills. The secret? Watch the ball, but do it sooner, rather than later.

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A Tall Alexander Tale

I sometimes think of making this a one topic blog, one that focuses exclusively on somatic based practices like the Feldenkrais Method or the Alexander Technique. But it’s not easy to find current news articles about this kind of stuff, at least not on a regular basis.

But today a pleasant surprise was waiting for me in NetNewsWire, the RSS aggregator that I use to collect information from many internet sources each day. Freelance writer Laura Moser provides Slate.com readers with Unnatural Poise: Learning the Alexander Technique, a clearly written piece of first person journalism telling us of her previously intractable shoulder injury, how a prolonged practitioner-assisted bout of the Alexander Technique helped lessen her constant, distracting shoulder pain.

Moser gives us the context that led to her seeking out Alexander practitioner Julie Brundage, provides a concise definition of the Technique and even gives us a few hints for good self-use..

Alexander was not Moser’s first attempt at managing the considerable residual pain from an injury to her right shoulder. (She ran after a connecting flight while carrying 75 pounds of luggage slug over that shoulder in 2004.) Accupuncture and PT seemed promising, but insurance wasn’t much help here, and medical cost was a big issue. Moser wrote two earlier articles about rigging up a medical tourism trip to China for treatment that was partially successful.

But she was about to be surprised by what she discovered about her injury and what she was doing during everyday life.

I grew up believing that success in life, or at least a decent report card, hinged on the ability to silence the body, to ignore its twitches and creaks. And so I seldom stretched when my back ached, or stood when my foot fell asleep. At first, I saw no connection between these habits and the shoulder injury I sustained in late 2004.

A trusted friend suggested she try Alexander. When she did, a surprising connection popped up:

I readily appreciated Alexander’s underlying logic and believed my teacher Julie’s suggestion that the root cause of my injury was my height. I sprouted to 6-foot-2 at age 16 and without realizing it spent much of the succeeding years trying to shrink my way into polite society. Finally, after more than a decade of hunching forward, my poor shoulder gave out. (Short people, who tend to pitch their necks backward and up, encounter a different set of problems.)

I knew that Alexander is more popular in the UK than in the USA, but I didn’t know that AT teachers outnumber chiropractors in the UK. Thank goodness for Slate, eh?

I’ve read many descriptions of Alexander, but the one here seems really accessible:

Since repetition destroys perception, we lose the ability to “feel” what’s right for our bodies. So instead of “fixing” our bad habits, Alexander tells us to simply observe them and think about inhibiting them. Sometimes, this involves little more than imagining the lower jaw moving forward and out, or the elbow rotating at three distinct points. This murky teleology lies at the heart of the Alexander Technique’s allure—and also of its difficulty.

And since this has the flavor of a self-help article, it wouldn’t be complete without a few tips:

She helped me set up an ergonomic workspace, and gave me tips for flying long distances without the usual muscular hangover. (The secret: staying on your feet, schmoozing in the flight attendants’ cubby.)

and

But I have learned to slow down, to think before I move. And having accepted that the world will always be a little short for me, I now pad chairs with dictionaries and phone books to elevate my hips above my knees. I never travel, not even on the subway, without a chiropractic chair insert that elicits envious comments from elderly passengers.

I’ve also tried one of these chair inserts, and they work pretty well. Trouble is, I’m a couple inches taller than Moser; the insert makes me too tall to fit into my car.

Tall isn’t always easy.

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