I have one simple comment. Why is a person with a history of 2 concussions and prolonged manifestation of PCS still playing hockey?

NHL players have hundreds of thousands of dollars on the line so they tough it out and play through. They do not have to go to a job and use their mind to think the next day. When their career is over, they can donate their brain to concussion science.

Stick to the face mask. Just noisy. Not close to concussive force.