Insanity
Under the name Beachbody brand, Insanity is a work out reginmen that claims to imrove fitness in 60 days with the use of strenuous stamina training. It was developed by trainer Shaun T, where he trains the indivudual through individual work outs done strenuously for 3-4 minutes followed by resting for approximately 30 seconds, then starting he whole process again.
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