Originally Posted by ChiefSmokeDawg
...He is confident that the cracking of the helmet is what prevented him from getting a concussion. Either way, I want my helmets to remain in one piece if I crash...
Well, the helmet completely destroying it's self upon impact would
be a good way to disperse the energy. The problem, of course is that doesn't do anything for you when you hit your head on the second tumble.
So, yeah, it's probably better that it stays on your head for the duration of the crash.