Might be a little low but I don't think that's too far off.
I mean how many guys to do you know have put on 35+ pounds of lean mass with no drugs? I don't know very many.
No wonder why so many rely on juice to do anything decent in a gym. My theory is, despite some lacking decent genetics for lifting, a small percentage do what is required in their diet/training to make bigger gains.
You know many who eat 3lbs chicken per day for a few years?
Never miss days lifting, push every routine, train heavy...for years.
And so on.
30lbs sounds about right and the reason most don't come close is they simply do not suck it up and eat/train hard for an extended period of time, or in the absurd quantity(food) to radically change your body.
To claim you'll gain all lean mass would be laughable, there will always be a little fat with a good amount of muscle gain and over eating.
I guess I fall in the few percentile. At 26, I was 155lbs, a year later...200lbs, 10 years later, 220lbs....zero drugs. Granted my bf is @10% now and I'm blocky, but a good 50lbs lean mass gain.
This is to prove a point to the half ass juicers out there. You can actually attain quite a bit on your own, but you were too much of a bitch to do so...now man the fuck up. :DBOOM!
The gym is a dwelling for many people who want to portray a bodybuilder, but only a few actually do it for real.
Unless you're going for the next Sandow or playing professional sports, drugs are just a consolation prize for failing yourself. You'll hear many excuses along the way, but that's the reality of it.
30lbs for someone who never touched a weight over 3 years, entirely attainable for the majority.
Let's not even get started at how weak people train either. Going to the gym and really training...2 different things. If you're spanking your Iphone or chatting like it's a dance club, you're not training...."hardcore"...ahah