Roger Earle, co-author of Weight Training: Steps to Success, explains what muscular endurance it and how it differs from muscular strength. Want to learn more? Check out the book: [ Ссылка ]
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Roger Earle, co-author of Weight Training: Steps to Success, explains what muscular endurance it and how it differs from muscular strength. Want to learn more? Check out the book: [ Ссылка ]