While aerobic exercise is an excellent way to burn calories, weight lifting offers additional benefits. The biggest benefit is that it can counter your body going into starvation mode as a result of dieting. Starvation mode can lead to your metabolism slowing down and muscle loss, both of which are countered by weight training.
When combined with a regular exercise routine, lifting weights has also been shown to reduce your risk of cancer. In fact, one study found weightlifters had a 40 percent less risk of cancer!