I was at my local drug store picking up some muscle milk, the employee there told me to take it when I wake up, and after my workouts, becuase if i take it before my workouts, im feeding body and it wont burn the stored fat, but nutrients i just put in, he said if i take it when i wake up ill refuel my body from the previous workout and the supplement would be out of my body within 4 hours, leaving my muscles hungry for more until the next time i would feed them, being after my workout, is he correct?