December 28 2009 12:16 AM
As brickhouse already said, you need to figure out how many calories you burn a day, and then eat that amount. If you're eating less than you burn, you're going to keep losing.
FitDay.com lets you log your daily routine and takes everything you do into account--from time spent sleeping to time spent riding or working out, or even grocery shopping. You just plug in your acitivity, and it'll calculate everything for you.
Make sure you get an adequate amount of protein. The typical recommendation is 1 g per pound of body weight. So if you're 130 lbs, then at least 130g protein/day. Whey is your friend.
And seriously, don't even worry about getting "buff" or huge. That won't happen accidentally. You'd have to be eating and training specifically for that purpose. Lifing heavy will give you the definition you want and add strength, but won't give you some crazy masculine/bodybuilder appearance. Also, do weighted squats... they'll help "save the booty." lulz.