i lost about 70 pounds in my first year of bike commuting (i had A LOT to lose), and have plateaued since then. i'm still slightly overweight and could stand to lose more, but i ride ~600 miles/month on average, and have maintained where i'm at for years, so i'm good with that. if i wanted the last stubborn pounds to go away, i'd have to attack it from a restricted diet perspective, and i'm just a hard core believer in the notion that life is way too damn short to restrict yourself exclusively to rabbit food (not that salads, and carrots, and cucumbers are bad or anything, but sometimes my soul just needs a cheeseburger).