Make your own free website on Tripod.com

Home Experiments

SKELETAL AND MUSCULAR SYSTEMS

Magic Arm Lift

Stand in a doorway and press the backs of your hands against the sides for about 30 seconds. Now take a step forward. What happens to your hands?

Your arms will rise. Your muscles are still exerting a force against the sides of the doorway, but when you move from the doorway and there is no resistance to your effort, your arms will lift.