I've read that regular aerobic exercise actually helps keep hunger in check. I've noticed this myself -- for several hours after a (modest) workout, I am satisfied by small, light meals. Anybody know the physiological basis for this effect? Something to do with neurotransmitters?
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I did some additional web-surfing on this subject, and it does appear to be the neurotransmitter serotonin that is involved here. Serotonin is secreted at a higher level during extended periods of moderate to heavy exercise. Along with its likely effects on mood (e.g., runner's high), it tends to suppress one's appetite for heavy, fatty foods, and incline one's tastes toward carbs. (This is consistent with Shaky's dissertation above.)
Personally, I find that I eat less overall on the days when I swim, even during the dangerous late evening hours spent in front of the tube. I think the above mechanism might explain why I would prefer lighter meals after workouts. In addition, in my case I think there is an additional psychological component -- I just don't want to mess up the progress I've made (in weight control) by pigging out after a good hard workout.
I did some additional web-surfing on this subject, and it does appear to be the neurotransmitter serotonin that is involved here. Serotonin is secreted at a higher level during extended periods of moderate to heavy exercise. Along with its likely effects on mood (e.g., runner's high), it tends to suppress one's appetite for heavy, fatty foods, and incline one's tastes toward carbs. (This is consistent with Shaky's dissertation above.)
Personally, I find that I eat less overall on the days when I swim, even during the dangerous late evening hours spent in front of the tube. I think the above mechanism might explain why I would prefer lighter meals after workouts. In addition, in my case I think there is an additional psychological component -- I just don't want to mess up the progress I've made (in weight control) by pigging out after a good hard workout.
