High Intensity Interval Training or HIIT is defined as short, intense, unsustainable bursts of physical activity, paired with intervals of quick rests. This type of intense training causes a sort of metabolic disturbance which can result in the body burning calories at a higher rate up to 48-72 hours later.
This type of training can be done anywhere and usually doesn’t require equipment and may be more efficient in terms of time commitment. This type of training also burns more fat effectively than typical endurance cardio. The body has to heal after this type of training so it is not recommended that you perform HIIT every day – usually it is recommended to perform this type of training a maximum of 1-3 days per week.