Should we eat candy or olive oil? This is the question of macronutrient composition, or “what to eat.” However, the persistence of insulin plays a key role in the development of insulin resistance, so there is also the question of meal timing, or “when to eat.” Both components are equally important. Unfortunately, we spend obsessive amounts of time and energy trying to understand what we should be eating and devote virtually no time to when we should be eating. We are only seeing half the picture.