The recipient of an MBA from Georgetown University, John Harrison is a native of New Canaan, CT, who serves as a global media and entertainment leader with Ernst & Young (EY). When he isn’t leading the company’s worldwide network of more than 8,000 media and entertainment industry financial professionals, John Harrison keeps physically fit through interval training.

High-intensity interval training (HIIT) is known to expedite weight loss more effectively than walking on a treadmill or using an elliptical at a steady pace for 30 minutes. This is because HIIT, which involves alternating short bursts of high-energy activity with 30 to 60 seconds of slower-paced activity, produces a drastic metabolic disturbance that causes your metabolic flame to heat up rapidly and continue burning following the conclusion of a workout. Conversely, low-intensity exercises like walking on a treadmill results in a slow and gradual burn of your metabolic flame.

Following an HIIT workout, oxygen consumption and caloric expenditure remain elevated as muscle cells work to restore metabolic and physiological factors in the cells to pre-exercise measures. This is known as excess post-exercise oxygen consumption. Studies at the University of Guelph have proven that the levels of fat burning were much higher through as little as two weeks of HIIT training compared to traditional exercise routines.