My oldest pair of yoga pants that I have (without holes in the crotch because my thighs rub together - they always have, even when I weighed 130 in high school) are too big. I wore them today to go running, and seriously, I had to pull them up every 30 seconds, until I started sweating and the sweat made them stick to my body.
Speaking of sweat, I have noticed that I am sweating a lot more lately. I didn't think about it until I read this article yesterday. The article says that when you become more fit, you sweat more, you condition your body to be better prepared, so it becomes a sweat factory.
I realized something yesterday. I am the most physically fit I have ever been in my adult life. I was very active and played a lot of sports in high school, but since I graduated I have not exercised much for a long period of time. I have been skinnier than I am right now, but I have not been fitter. :-) What a good feeling.