Speculations arise about how efficiently chocolate milk can replenishing energy post- workout, in spite of information that it is rich in proteins, carbohydrates, and sugar.
According to Slate, during high intensity workouts muscle proteins break down and glycogen levels deplete by 60-75 %, however for muscle growth after workout, one need to replenish glycogen and protein that can easily be gained from chocolate milk. Even trainers suggest their students to take 4 grams of carbohydrates to 1 gram of protein within 30 minutes after workout.
However, workout intensity and duration of workouts determine how much energy is used like in high intensity workout such as running stairs, boxing, competitive soccer, where the max heart rate is 80-85% and burn more calories, whereas low intensity workout such as pilates, walking, hiking that makes the heart rate reach 60-65% and burn fewer calories.
Though a less intense workout requires less replenishing and less chocolate milk and instead of this one should go for blueberries (rich in anti-oxidants and accelerates muscle recovery time), orange juice (high in potassium and carbohydrates and helps in restoring body fuel levels), coconut water (high in potassium and low sodium which is better for low intensity workout) and water (key to post-workout recovery).