I just got back from a great week in Vail snowboarding. I've been more hurt skiing more than snowboarding. No head injuries, but ~15 years ago I sprained my kn

I just got back from a great week in Vail snowboarding. I've been more hurt skiing more than snowboarding. No head injuries, but ~15 years ago I sprained my knee pretty bad snow skiing. When that healed, I switched to snowboarding and haven't skied since. The most hurt I've been was tearing an ACL wakeboarding. I pretty much retired from going hard on the wakeboard since it beat me up more than any other sport I've done including fights sports like BJJ.