I've been in shape for my entire life (im only 21 so...)
I was a competitive gymnast from the time I was 12 untill about 17 years old. I've always been short, im only 5' 5" now, however i've always had alot of muscle mass, and I never really had to watch my weight.
My freshman year of college i weighed 135 pounds.
finishing up my junior year I weighed myself when i got home in the summer... 175 WTF!?!
I've cut out soda and almost all sugar. Eating better in general. I've been trying to work out 5 days a week, minimum 3 mile run or equivalent cardio workout. I'm down to 160 now. I want to get down to 145. Eventually I want to continue training and become a freerunner. continuously working toward that goal, long way to go though.
if you dont know what freerunning/parkour is check out
American Parkour - Parkour and Freerunning