It's all interrelated. Exercise may (it did to me) shift your brain into seeking other kinds of food and drinks. I'm much more willing to drink simple water after a long soccer match. Exception being swimming, which makes me wanna eat all cakes in sight.

It also leads to a different lifestyle if I may say so. Being sedentary means low amount of sensation, leading to the eating for pleasure reflex, all this without a way to consume. Sport will keep you busy, probably make you feel weird, sore then not sore = good feeling. Hinting your mind that you can have good times this way.