It's pretty well understood that professional hockey players are incredible athletes, but the video above really drives the point home. NHL stars Sidney Crosby, P.K. Subban, Alex Ovechkin, and several more all hit the ice wearing helmet-mounted GoPro cameras and the result is both awe-inspiring and moderately quease-inducing. Seriously, watching an NHL pro pull off intricate stick work while flying at what seems like 100 mph is not for those of you prone to motion sickness. Don't say we didn't warn you.Note: Please send us the video if you do end up puking. Thanks.