Comment Re:P1 = Jet Li, Gary Kasparov, David Beckham Visa (Score 1) 114
Risk doesn't need to be TBI from e.g. American Football; there are plenty of non-contact sports. Tennis, track and field, etc. all have a higher risk of injury (muscle strain, etc.) than normal daily activities like walking to the mailbox. I'm not saying I subscribe to Alioth's definition, but the "risk" aspect is certainly there for sports that require exertion.