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Magic and Illusions

Why is the bed of nails trick safe?

Answer

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Wiki User
December 09, 2008 10:08AM

Each nail provides a support force to hold up the weight against due to graity. If each nail does not have enough force applied to it for them to pierce the skin, then you can safely lie on the nailbed. If you were to only sit or do a handstand on the nailbed, then enough of you body's total force is applied to each nail for the support force to be strong enough to pierce skin.