Which comes first: shampoo or conditioner? It's shampoo. If only exercise were that simple. No matter how good we get at understanding exercise science, there are still topics that seem debatable. It is recommended to do your strength training before your endurance to empty your carbohydrate stores. The idea is to force your body to get its energy primarily from fat rather than carbs. While it is true that a much higher percentage of fat is burned for energy, the calorie burn, is relatively low. ~ Berceste