I am 33 and only just STARTING out.

So at least you lot have been there and done it, I am only just embarking in it.
I aim for about 5 years to go from 154lbs I am now (11st dead on) to around the 180lbs to 200lbs range. Thats around 14st.
So my aim is to gain 3st in 5 years. That averages out to about 0.7lb of muscle gained per month. PIECE OF PISS! I bet it can be done in even less time like 3 years with a few naughty cycles along the way.
The really odd thing with me is I already have OK legs, not muscular but not skinny, its my upper body that needs the gains.
I thought I was too old but its not true, my mates dad is 75 and he looks about 50. You wouldn't want to f**k with him I know that much. He still lifts weights to this day and he is 75 FFS.
So I reckon up to like 50 years old you can keep it up, longer even.
Although when you look at Arnie now it is a bit worrying and harder to keep fat off as you get older.
I read somewhere, testosterone levels in men peak at
40. Therefore it follows surely that the people that can expect the best gains are not the 18 year olds, not the 25 year olds but the 40 year olds?
Its a right bastard how you can't just go back in time lol.