I added 25 lbs of muscle in <month. Since high school I'd never been able able to gain much muscle. Even lifting heavily and being quite strong and eating voraciously the highest I could get to was 163 lbs at 5'11" when I was 25. Earlier this year, I heard of the Gallon of Milk a Day (GOMAD) diet and tried it. I went from 152 to 177 in less than a month, while doing CrossFit three days a week, and one day each a week testing my 1RM max in the squat and bench press. I've never had any appreciable bodyfat (~12%) and I did not gain any during this time. I did not use any supplements of any kind, not creatine, nor steroids, nor insulin.
Edit: Incidentally, since it did indeed happen, the incredulity expressed by the down votes indicates just how proud I should be about it. ;) I never complain about down votes, but there is something mind bending about being down voted for something you know to be pure fact and to realize your down voters literally have no idea what they're talking about.
Edit: Incidentally, since it did indeed happen, the incredulity expressed by the down votes indicates just how proud I should be about it. ;) I never complain about down votes, but there is something mind bending about being down voted for something you know to be pure fact and to realize your down voters literally have no idea what they're talking about.