When I decided football would be a good idea to do my freshmen year of high school at 6'4 280 lbs, my life would greatly change that following year. On a kickoff return I blocked for my teammate as usual except this time a much larger guy knocked me to the ground. After I got back to the sidelines, my coach said if I ever wanted to play for him again I would get my a$$ in the gym, and after a couple sessions I was hooked on the weights and on increasing my size.

As Arnold stated in the movie Pumping Iron, it's all about the pump. When you get that feeling, you feel incredible, almost like you are invincible and there is no weight too heavy for you. That "fullness" feeling is the addiction that keeps you coming back.