This is a X-ray drawing of what can happen if someone does contact sports. There is a possible crack of bones and can cause concussions, a shaking of the brain, which the brain hits the skull, which causes massive damage
Contact sports can also cause Amyotrophic lateral sclerosis (ALS) which can make a persoon lose muscles, have difficulty speaking, breathing, hearing, and etc. Usually it is fatal, and is very dangerous!
So please do something about it!!!!