The right pre-workout meal can make a world of difference if you're looking for an energy boost. Carbohydrates and protein are the most important macronutrients for a workout. An hour or so before you work out, Have an almond and banana sandwich with whole grain bread, some oatmeal with whole fruit and crushed nuts, or some sweet potato with chicken. Eating something like that will make you feel phenomenal while you're exercising.