The Journal of Sports Science and Medicine
7. According to this research article, the workouts involving a variety of muscle movements depletes muscle sugar or glycogen which is stored in the muscle.
Conclusions Muscle glycogen is an essential fuel for intense exercise, whether the exercise is of an aerobic or anaerobic nature. Glycogen synthesis is a relatively slow process, and therefore the restoration of muscle glycogen requires special considerations when there is limited time between training sessions or competition..