I have a bit of an opposite problem, I need to continuously be eating and weightlifting or I lose weight.

I weigh between 160-165 now, but when I moved over from MTB/BMX to fixed and road-type riding with considerably longer distances, I shed mass.

In college at my heaviest (double split workouts, heavy supplements, lifting to failure, massive food intake), I got up to 183. I'm 5'8-5'9, so it was really way too big, and really not necessary.

Now, since I ride more than anything, I have to basically put my bike away and focus on weightlifting or I'll simply waste away. My senior year of high school I weighed 142 lbs.

Are you supplementing your riding with gym time as well naterod?