High Intensity Interval Training
If you want to take your fitness and fat loss to the next level—without spending more time in the gym—then high intensity interval training (also known as HIIT) could be exactly what you're looking for. Besides being a quick method to getting in a great workout, intervals are extremely effective for transforming your physique. By incorporating intense periods of work with short recovery segments, intervals allow you to keep the workout intensity high while still maintaining form. It involves briefly pushing yourself beyond the upper end of your aerobic exercise zone, it offers you several advantages that traditional steady-state exercise (where you keep your heart rate within your aerobic zone) can’t provide. The magic of high intensity interval training (or HIIT for short) lies its ability to keep you burning fat even after you leave the gym. In short, your body isn’t able to bring in enough oxygen during periods of hard work. Therefore, you accumulate a “debt” of oxygen that must be repaid post-workout in order to get back to normal. The result — your metabolism is revved for hours after you leave the gym. Trainers refer to this phenomena as excess post-exercise oxygen consumption or EPOC. The biggest way to use it to your advantage is to make short, intense exercise bouts a regular piece of your workout regimen.