Does PX90 work?

The high-intensity interval-training fitness approach in P90X works; it is one of the most efficient ways to get in shape, states the American Council on Exercise. The P90X program meets or exceeds the fitness industry standards for weight-loss and cardiovascular improvement.

The number of calories burned per workout depends on age, gender, weight and intensity level, explains Health Research Funding. In one study, male participants burned an average of 441 to 699 calories per workout, and females burned an average of 302 to 544 calories. The plyometrics routine was the highest calorie burner, and the chest, shoulders and triceps routine was the lowest calorie burner.