A little wind or the occasional burp every now and then is a natural sign there's some digestive activity going on inside, however, excessive occurrence of these bodily functions may be a sign that's somethings up with your gut.
So, with this title you might be thinking that I'm going to suggest green tea (ramps up metabolism), celery (more calories to digest than it contains), coconut oil (it's fat burning y'know) and as much as I'd like to believe dipping celery into a bulletproof green tea might help your waistline, I'm yet to find anyone to do this on a daily basis, but feel free to give it a go. In actual fact, the foods I'm about to recommend have a more indirect effect on your body composition, mood, energy and vitality by feeding your gut flora.