13 Moves That Let You Build Muscle Without Weights. Web Directions: Assume a high plank position with your arms extended. Engaging your core and keeping your spine and neck neutral, drive your right knee up toward your chest. Extend it... Repeat for 30.
13 Moves That Let You Build Muscle Without Weights from 4.bp.blogspot.com
Web Technique Tips Box Jump. Box jumps are a great all-around leg exercise and double as a killer conditioning tool. If you're new to.
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