Can You Hoop?

Can you use a toy hoop? A toy hoop is a plastic ring. You spin it around your body. You try to keep it from falling to the ground.

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You push the toy hoop with your hips. At the same time, you spin the hoop around. The motion [change in position] of your body keeps the hoop up.

Some people can keep the hoop up. Others cannot.

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Scientists used robots to find out why. Scientists studied different motions. They studied different body shapes. A body shaped like a pear worked best. The hips push the toy hoop up. The waist keeps it in place. The hoop spins round and round!

What Can You Do?       Try hooping. Tell about the motion.

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