As you’ve probably heard before, your post-workout meal may very well be your most important meal of the day. The reason is that when you’re finished with an intense workout, you’re entering a catabolic state where your muscle glycogen is depleted and increased cortisol levels are beginning to excessively break down muscle tissue. These conditions are not good and the only way to reverse this catabolic state (and promote an anabolic state) is to consume a quickly digestible post-workout meal as soon as you can after training. The goal is to choose a meal with quickly digestible carbs to replenish muscle glycogen as well as quickly digestible protein to provide the amino acids needed to jump start muscular repair. The surge of carbohydrates and amino acids from this quickly digested meal promotes an insulin spike from the pancreas, which shuttles nutrients into the muscle cells.
The post-workout meal should generally contain between 300-500 calories to get the best response. For example, a 120-lb female may only need a 300-calorie meal, whereas a 200-lb male may need a 500-calorie post-workout meal. Your post-workout meal should also contain anywhere from a 2:1 ratio of carbs:protein to a 4:1 ratio of carbs:protein. While most of your other daily meals should contain a source of healthy fats, keep the fat content of your post-workout meal to a bare minimum, since fat slows the absorption of the meal, which is the opposite of what you want after a workout.