> The hammer appears to slow before impact Human nervous system has a similar mechanism where limbs are slowed down just before the impact when striking someth

> The hammer appears to slow before impact Human nervous system has a similar mechanism where limbs are slowed down just before the impact when striking something to prevent muscle over-extension and injury, high performance martial artists train against this so that full speed and force is available upon impact without any slowdowns. https://en.wikipedia.org/wiki/Stretch_reflex https://en.wikipedia.org/wiki/Stretch_reflex