Originally Posted by 843
Funny, cause I sit in front of my comp for at least 8 hours a day, at least 12 hours on weekends and tennis is the only outdoor activity I engage in, other than college. My brother and sister are both younger than me, yet they outweigh me by 20lbs or so. Guess I'm just weird.
Age also has a lot to do with it. Regardless of whether or not you get married, have kids, etc, your metabolism will slow down when you get older. It's different for different people, so it could be awhile, but it will happen. Not saying that you will gain weight; just saying that it won't be like "nothing i do makes me gain weight" forever.