Well, I used to be 180 lbs (15% body fat) back in high school but then I injured my rotator cuff and lost all the muscle mass. After many years in college and then a surgery to repair my shoulder, I was down to 140 lbs (7% body fat). I am 5'10" and currently at 145 lbs (7% body fat), I started doing simple body weight routines every other day back in April and have gained five pounds.
Back in the day, it was very easy for me to bulk up but now it just seems impossible. This shoulder surgery has really destroyed my chest and thats what I have been mainly focusing on. When I first started rehabing it, I was able to only do 2 sets of 10 push ups and I would be screaming. Now I am at about 3 sets of 50 push ups with 2 minute rests in between a day. I don't do any leg routines but that is due to the fact that I bike everywhere (over 20 miles a day). I just make sure to keep my bike on the heaviest gears all the time, but now I am so used to it, I think I will need to start squats to see any difference. I don't do any other exercises except curls and that is just with free weight dumb bells. I am now at 40 lbs 3 sets of 20 (2 minute rest, I need longer than most to rest). Chinups I started at 3 after the surgery, now I am up to 3 sets of 25 (body weight).
I don't know much about weight lifting anymore, because the stuff that worked back in high school don't seem to be producing results, and personally I don't like going to the gym (too many meat heads there). I eat like shit, so that needs to change if I want to see a real body transformation, (2 or 3 meals a day, but really shitty nasty food like a king size number one at burger king with 2 crispy tacos).
Any advice, on how to get motivated or maybe clean up my method. Personally, even the timing of the work outs is sloppy, if I am too sore, I will skip a day or two, and then get back on it. Mainly I just want my chest back, thats really all.
EDIT: My surgery was aprroximately a year and a half ago.