Editor's Note: An isometric exercise is a form of exercise that strengthens a muscle without changing its length. ...Source: https://www.theepochtimes.com/health/th ... 96645.html
The 1-Minute Full Body Workout for a Stronger Back and Trimmer Waist
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claireokc
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The 1-Minute Full Body Workout for a Stronger Back and Trimmer Waist
Editor's Note: An isometric exercise is a form of exercise that strengthens a muscle without changing its length. ...Source: https://www.theepochtimes.com/health/th ... 96645.html
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