Good Sparring article

I like how Bill talks about sparring and ego, and uses video samples from BJJ rolling and Muay Thai sparring. It is important to know how not to be a jerk to your sparring partner. Sparring light (50% of power, technique based only, no ego), medium (75% of power, sense of respect, lowered ego), and heavy sparring (95% power, heavy only for those prepped for fighting competition, yet not actual fight) to improve your game.