Pinch the spot just behind your ankle: that hard cord is your Achilles tendon. When you run, it takes six to eight times your body weight with every step. Inside, it's a cable made of cables; when you walk, it works like a spring and a catapult. Your muscles adapt fast and your tendon runs months behind, and its core still carries the carbon "stamp" from when you were growing, up to about 17. The twist: it doesn't count reps, it counts force. In the studies, 3-second pushes close to max with 3 seconds of rest changed it the most.
Chapters: 0:00 Pinch your Achilles · 0:35 A cable of cables · 1:30 The spring · 2:26 The delay · 3:29 Seventeen years · 4:18 The good intention · 5:47 Three seconds · 6:48 Your plan for this week · 8:26 Wrap-up
Guides and programs: https://activeforgepro.com/store/?utm_source=dailymotion&utm_medium=video&utm_campaign=af01-tendons
Sources: Scott & Winter 1990 · Fukunaga et al. 2001 · Ishikawa et al. 2005 · Kubo et al. 2010 and 2012 · Miller et al. 2005 · Heinemeier et al. 2013 · Schoenfeld et al. 2017 · Arampatzis et al. 2007 and 2010 · Bohm et al. 2014 · Reeves et al. 2003 · Kong & de Heer 2008 · Klauser et al. 2010 · Kannus 2000 · Finni et al. 2001 · Wikipedia (Gelatin, Bomb pulse).
Not medical advice: if your tendon hurts, see a professional first. Simplified illustrations. Synthetic voice; AI-generated images and AI-animated video. Sound effects: CC0 (Freesound).
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