Geez, some of you guys are scary light. I'm 5' 6" and 125lbs. Commuting hasn't really helped this so much as offset the ridiculous amount of ice cream/cookies/beer that I consume.

Being really small is quite a problem from the clothes sizing perspective. My waist is about 28" - this means that jeans with a 30 waist will fall right off without a belt. Finding anything smaller is pretty hit-and-miss. T-shirts? Most feel like they were made by cutting a mainsail off of a boat and wrapping it around my torso. So, I typically have to shop around until I find a make/model of shirt that fits well, and buy like 10 of them. Good luck at discount stores like Marshall's - nothing there fits.

My goal is to get up to 130lbs, without gaining much fat. I'm also too lazy to go to the gym, so I do calisthenics at home. We'll see how it works out :\