The Woodpecker’s Shock-Absorbing Head

https://kcyeeblog101.wordpress.com/2015/08/04/woodpecker-in-slow-motion/

● A g-force measuring between 80 and 100 is strong enough to give you a concussion. Yet, the woodpecker sustains a g-force of about 1,200 as it drums its bill against tree bark.  evidently without even getting a headache, much less a concussion