I spent 2 years of my life going to a gym. I worked the night shift at the time so I had nothing else going on in my life.
I'd go 3 or 4 times a week. Cardio, stretching, lifting, increase weights/sets/reps you name it, I've done it.
It sort of backfired on me. I felt good and healthy but I lost weight(already hideously underweight), my pants became too loose, my shits too tight. Not a whole lot of 'buff' development and at the end of the two years it felt like lifting 50lbs boxes of crap never became any easier for me.
The thing that sucked about it was I became constantly hungry. So much so I had to stop because I was spending so much on food.