Also, I can't really speak for injury as I seem to be invincible. I started playing guitar at 6, from the age of 13 I quit school (without my parent's knowledge) so I could play guitar 10-12 hours every day. Did that for years, had a successful career playing the guitar in which again, I was playing for a good 10-12 hours most days and never ever had any repetitive strain injuries or anything. All of my peers warmed up, took precautions and everything like that, but I didn't. Now I draw like a madman.
Ace
P.S. I know that saying that is a precursor to me coming on here next week and complaining of carpel tunnel syndrome, but hey ho - live dangerously haha.