Interval training has become one of the latest training methods to gain popularity in the fitness world. If your not familiar with interval training, it is a form of cardiovascular exercise that alternates periods of high intensity with periods of lower intensity. The most common method of interval training is sprinting. After a five minute warm-up you would sprint for a minute then jog lightly for a minute and repeat that cycle 5-8 times (don’t forget a five minute cool down). The sprint would be considered the high intensity and the light jog would be the low intensity.