The body uses two energy expenditure systems to create fuel from stored fat in order to complete all bodily activities or movements. The Aerobic System: Activates after 3-5 minutes of constant movement or activity. The Anaerobic System: Activates immediately for as long as 3 minutes and is only used for short, explosive movements or activities. Here is how these concepts are strategically applie
d in the PHIIT system…
Our workouts switch from an aerobic cardiovascular exercise to an anaerobic resistance exercise every 3 minutes with 1 minute for transition; keeping the body from choosing the energy expenditure system it’s going to use. This confusion forces the body to burn more calories, a process explained by a science known as the “ZIG-ZAG” theory. PHIIT workouts are structured around this "ZIG-ZAG" principal. The activity of switching back and forth from an aerobic cardiovascular system to an anaerobic system is what increases the fat expenditure of the body by more than 500% and continues to burn calories well after the actual exercise is completed. You simply burn more calories in a PHIIT workout than any other program available today.
