> First off, don't exercise two to three days continuously, especially if you are just starting off. If you are targeting different muscle groups, it's okay, bu

> First off, don't exercise two to three days continuously, especially if you are just starting off. If you are targeting different muscle groups, it's okay, but if you are targeting the same ones, it's not necessary. Not only is it not necessary, it's actively harmful. After stressing your muscles, you need to give your body time to recover. If you stress your muscles beyond your body's ability to recover quickly, you will get weaker, not stronger. If you wait at least 48 hours between workouts, you'll see better results.