Interval training can supercharge your fitness, boost your metabolism, burn off excess fat and help you to reach your fitness goals. It is the best method for losing fat.

“Your body begins to build new capillaries, and is better able to take in and deliver oxygen to the working muscles. Muscles develop a higher tolerance to the build-up of lactate, and the heart muscle is strengthened. These changes result in improved performance particularly within the cardiovascular system.” Elizabeth Quinn, About.com