Why You Shouldn't Use Protein as Fuel

When we exercise, we do break down protein. It's only when we push ourselves so far into energy deficit tat that a mino acid pool starts to actually be spent. Lactate is a source of energy, but they key turns come from fat oxidation. S the simple answer is that there are three carbs, fat and protein. But really, if you get it riht, it's carbs in fact.