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#1 Sit in a chair with good posture. Try to get up without
leaning forward.
Explanation: When sitting your center of mass is over the chair. To stand up, it needs to be over your feet. One way is to lean forward (which is what you habitually do). Another is to bring your feet back, on either side of the chair. You may want to have the person fold their hands in their lap to avoid them trying to grab onto something. |
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#2 Stand with toes to the wall. Try to stand on your toes
for three seconds.
Explanation: Your center of mass is typically over your heels. To stand on your toes, you need to shift your center of mass forward - the wall prevents you from doing that. A small baseboard at the bottom of the wall isn't usually enough to mess this experiment up, but a baseboard heater might. |
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#3 Stand two footlengths from the wall. Gently lean over and put
your head against the wall. Now try to get up with using your hands.
Most can do this but some can't. Bigger feet and a high center of mass are a disadvantage. To make it more difficult, you can lean over, put your head against the wall, pick up a chair and then try to get up. CAUTION: competitive people will try to push off of the wall with their head with the usual result that their head comes right back down and hits the wall. I usually put my hand or a small pillow on the wall near their head, and if they do this I quickly slide it down to be between the wall and their head before they hit. |