...and how ridiculously jacked he is at the age of 47 "hmmm, I'm almost 50, better take a break from this NFL stuff and slow it down with some cage fighting" "Walker is also intriguing for being one of the few pro football players to become successful without the use of free weight training. Rather than a heavy weight room regimen, Walker used bodyweight exercise, calisthenics, and conditioning, as well as martial arts training. He remains to this day an oddity in the pro football world. He has been said to do thousands of pushups and situps daily, rather than lift weights, while maintaining 2% body fat. For the past twenty years, he claims to sleep four hours a night and only eat one meal a day during the evening, which normally consists of a salad, soup and bread."