Does exercise suppress appetite?

No: It may immediately after if exercise is prolonged and/ or intense. Eventually your body will want to refuel. Best to choose whole foods in proper portions (think 1/2 plate with fruits and veggies, 1/4 with whole grain carb and 1/4 with a protein).

Yes and no: Exercise suppresses appetite immediately after exercise because your blood vessels are busy w/ your muscles. It takes a while for them to be available for digesting food again. However, building new muscle turns up metabolism. That is energy-burning and can increase appetite. That doesn't mean you have to increase calories, though. Protein & vegetables can satisfy your body need w/o adding fat.

Interestingly, yes.: Not only does exercise help you utilize ingested calories more efficiently, i.e. help you store calories as usable forms of energy rather than fat, but exercise also helps curb the appetite in the long run.