I have tried the 5 days one bodypart, it did not worked for me. I am now doing a 10 weeks on 2 weeks off full body split 2 times a week and went from 165 lbs to 207 lbs in 3, 10 weeks program ( 7 mths, ). I am doing the Peary Rader Routine and the only supplement I'm taking Whey/ soy and milk...