Overview:Interval training is a type of exercise that is excellent for fitness and for fat loss. It involves quick bursts of sprints followed by a rest period. Interval training has been found to be up to 8 times more affective for fat loss than normal aerobic exercise. It also has proven to improve an athletes fitness
Overview:P90X is a fitness system of workouts designed to promote weight loss through interval training. It was developed by Tony Horton and BeachBody and aims to get participants in shape in 90 days. See reviews, pictures, and videos about P90X here.
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