Most calories are lost through exercise involving large muscles of the body: primarily leg muscles and back muscles. Many burn calories with exercise performance, which also involved several muscles, such as Squats or dead lift. It is also recommended interval training, which can be implemented on the track, bike, or similar device. This is the first workout for about one minute practiced very intensively, followed by less intensive phase, which also takes about one minute. More and less intensive phase, then turn out up to 20 minutes.