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​This is HIIT–GRAVITY‘s biggest success factor: Simply stated, EPOC is the elevation in metabolism post exercising, which is a major component of the thermic effect of activity. This school of thought suggests EPOC is a major contributor to total daily energy expenditure and the maintenance of healthy body mass. It can also be described as the increased rate of oxygen intake following strenuous activity intended to erase the body's "oxygen deficit. It is the process that restores the body to its normal resting state. This restoration of the body’s natural normal state is why and how there is an increased level of metabolism burning long after the exercises have ceased.

FACT: You need to burn 3500kcal to lose 1lb fat.
Low Intensity Cardio Less than 65% of your perceived level of exertion. Walking burns only 7kcal/min. That's why it's not efficient for rapid fat loss.
 
Moderate Intensity Cardio 65-75% of your perceived level of exertion. Steady state cardio at moderate intensity on the elliptical trainer burns about 10kcal/min.
 
High Intensity Cardio +75% of your perceived level of exertion.  Sprints burn 14kcal/min. 

How Many Calories Does Cardio Burn?

Bodybuilding.com had the following information to say about HIIT training.
“The high intensity level of HIIT enables you to increase both your aerobic and anaerobic endurance while burning more “adipose tissue” (fat) than ever before.”

30mins of HIIT burns 3049.2kcal more per month than 30mins of steady state cardio.

HIIT works more efficiently than steady state cardio only when the individual gets upwards in the +75% percentile level of exertion. This means in order for it to work, you need to increase both your aerobic and anaerobic endurance simultaneously. Until the muscles burns or fails…….

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HIIT has an EPOC of 14% vs. 7% steady state cardio.

Excess Post-exercise Oxygen Consumption (EPOC)

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