"I have no fear of fainting," Arnold said. "I do squats until I fall over and pass out. So what? It's not going to kill me. I wake up five minutes later and I'm OK. A lot of other athletes are afraid of this. So they don't pass out. They don't go on."
You don't have to push it so far that you pass out, but you need to work as hard as you can every day. That's the only way champions are made.