Metabolic workouts may be your answer. One of the best forms of metabolic workouts would be bodyweight circuits. It's just you on your own with a stopwatch. Metabolic workouts will increase the growth hormone produced within the working muscles. The lack of rest between the different exercises increases the metabolite build up in the muscles with increases in substances such as lactic acid and hydrogen ions. This build up of metabolites can change the shape of your body very quickly.

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