Whether you want to lose weight or gain muscle, it is best to exercise for 30-60 minutes at a time. Aerobic exercise takes 20 minutes to burn fat effectively, and 30-60 minutes of exercise can better help burn excess fat in the body.

Extended information fitness exercise is a kind of exercise which aims at developing muscles, increasing physical strength, improving body shape and cultivating sentiment by using various instruments and special action methods.

In the long-term development process, fitness has formed two relatively independent sports, namely competitive bodybuilding and competitive aerobics.

Reference Fitness _ Baidu Encyclopedia