Well I'm not trying to preach this stuff or anything, all I know is that I always stayed away from fat as much as possible, I always wanted to stay as lean as can be, I usually only ate chicken, ground turkey, tuna, egg whites, and whey as my primary protein sources, maybe 1 or 2 times a week I would throw in a steak. Since I've been doing this, I got bigger, stronger, fuller, feel better..it's not just an increase in testosterone, overall I feel alot better!