After attaching a severed arm to a large pendulum and tightening the tendons with fishing line and guitar pegs, researchers found that a clenched fist can strike a padded dumbbell with twice the force of an open hand before delicate bones break.
After attaching a severed arm to a large pendulum and tightening the tendons with fishing line and guitar pegs, researchers found that a clenched fist can strike a padded dumbbell with twice the force of an open hand before delicate bones break.