How Much Is Too Much Exercise?

How much exercise is right varies by individual fitness level. For weight training, the important thing is to not work the same muscle group two days in a row. If you work out with high numbers of sets or heavy weights, you may need to take longer between workouts for a particular muscle. Workouts of 45 minutes or less are best. Growth hormone peaks around that time, and doing more may lead to overtraining. Three days of running is a good program, especially if you are doing a lot of weight training. Individuals can vary their workouts and still get good results, but it's important to cut back if you seem to be too fatigued or stop making progress.