Uploaded April 2026 | Updated September 2026, 2 weeks ago

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In this video, Martin Rios explains why a fitness girl's hamstrings are likely not growing. Martin Rios discusses why poor posture and lifting technique could be affecting your hamstring development and how to fix it. After watching this video, you'll know how to build athletic and aesthetic hamstrings.

#hamstrings #posture #legday #gym