Hmm... I totally believe science, but one has to look at the research and figure out how much does it explain about very complex phenomenon like metabolism. It does explain a lot but that's still a tiny slice. Over last couple years I've met several doctors who where also researchers and professors. They know a lot, but still they can't give more advice beyond obvious: Do eat often. Don't eat crap. Don't eat too much. Move your body. But beyond that and several researched illnesses it's a mystery. The impact is not always direct. Body adjusts all the time. Not always in a smart way. Listening to it is not always the best choice. Digestion messes with out brain. Actually guts are a brain in itself. I don't have numbers here but a ton of neurons work in guts, not talking about rest of endocrinal activities. And this is very important for salsa dancing. We need energy - mental and physical. Often at late hours.