duey, are you adding weight every work out or every week? When I did 5x5 last year I started light, like WTF light. But I added 5 lb / workout and before I knew it I was lifting heavy. When it got too heavy I switched to 5x3 & then when that got too heavy I switched to 3x5. My legs were sore. I was eating like a mofo & I was training 100% natural & managed to put on 10 lbs in 9 months.