This thread has gotten goofy. It's easy to say a contusion or sprain is no big deal, but that's not true. I took a helmet to my thigh (thigh pad pocket ripped, and pad was out of place), and I couldn't walk for a day. I was at practice on Monday, tho avoiding contact. Pinched nerves, stingers, a helmet on your hip bone, twisted ankle, all kinds of things sit you out, but let you get back into it a few days later.
As someone said, maybe not full contact until later, but some of that stuff can sideline you.
It seems immature to make some of the accusations made here.