The Revive Stronger Podcast Loaded Stretching: Breakthrough or Muscle-Building Myth? - Jeremy Ethier
21 snips
Feb 14, 2026 
Jeremy Ethier, a science-based fitness coach and YouTuber who runs MRI studies translating exercise science into practice, joins to dissect stretch versus squeeze for muscle growth. They cover the study design, controlled MRI findings showing no big difference, the role of full range of motion and volume, and plans for follow-up research on back and shoulders.
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From Pre-Med To Fitness Research
- Jeremy describes shifting from pre-med plans to kinesiology after discovering exercise science papers that hooked him.
- That curiosity led him to personal training, client testing, and eventually launching his YouTube channel.
'Stretch' Is Not One Thing
- Jeremy explains 'stretch' is ambiguous and covers different variables like muscle length and range of motion.
- He cautions that mixed definitions caused people to overgeneralize findings about the stretch.
Control Variables With Matched Exercises
- Use the same exercise and equipment when comparing stretch vs squeeze to control confounding variables.
- Jeremy used adjustable Prime machines and MRI to isolate the resistance profile as the only variable.
