Do you jog regularly or frequently use the treadmill when you go to the gym? If so, you could be doing a disservice to yourself. In 2007, the American College of Sports Medicine (ACSM) changed its exercise guidelines. While 30 minutes of aerobic exercise performed 3 times a week is acceptable, daily exercise will promote faster fat loss. However, to avoid injuries from overuse, the ACSM advised varying your workouts. In other words, if you run on the treadmill one day, do a different type of aerobic workout the next day.