As a young college guy with a half bum knee and a half bum back, don't push yourself because you think you will be able to bounc back at a later date.
I was invovled in a negative helicopter-ground interaction as a result of enemy fire and missed up my lower back and subsquently did even worse damage by not waiting until I was 100% by going out and doing stupid things.
Patience is a virtue.
NRA Life Member
Big Sister: "You should be sponsored by Allen"
Me: "If you can't shoot good, at least look good walking to the firing line."
Big Sister: "Can you not afford a Pelican? Then buy an Allen gun bag."