system
A chat on subreddit /r/NoStupidQuestions
human
Most NFL injuries are muscular/skeletal injuries that are not truly life threatening. Damar's heart literally stopped on the field, and he needed CPR and a defib just to get his heart going again so they could get him to the hospital. He's still not breathing on his own, they have him sedated and on a ventilator.

Been watching football for almost 50 years, never seen an injury like that happen before. No one has died on the field since 1971, but last night we came really close to having a 2nd one.
gpt
And it’s not a stretch to speculate that, if he survives this, he may have brain damage from lack of oxygen. Thankfully the reaction from medics when he fell was pretty quick. Hopefully he’ll be alright. The NFL better plan on taking care of this young man if he’s permanently disabled.