Can I change my silhouette in just 30 minutes?

YES:

A study done by the American College of Sports (ACSM) has proven that doing just one circuit is enough to change your silhouette if you are using equipment that offers positive and negative resistance.

This study, done with varied samples (athlete and non-athlete), could not prove any advantage to doing more than one series to develop strength, toning or muscular definition.

The secret to changing your silhouette can be resumed with just one word: Intensity!

One series until muscle failure is all you need!

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