@drgains_official: Researchers say no drug comes close to what the soleus can do for fat metabolism — yet you’re probably not training it! A 2022 iScience study found that activating the soleus — just 1% of your body mass — can raise whole-body oxidative metabolism by up to 300% above baseline, sustained for hours, with minimal glycogen use. In their words, “"We are unaware of ANY existing or promising pharmaceuticals that come close to raising and sustaining whole-body oxidative metabolism at this magnitude.” The soleus is ≥80% slow-twitch (the highest percentage of any muscle in the body by far), and can fire for hours without glycogen depletion. You isolate it specifically by doing seated heel raises with the knee bent — because that position puts the MUCH stronger and typically dominant gastrocnemius into active insufficiency, leaving the majority of the load for the soleus. You can do this on your stairs. Right now. No equipment needed. It’s likely the most under-utilized muscle in the body. Yet still just 7th on my Top 10 Most Underrated and Underworked Muscles list. Follow so you don’t miss the rest — they’re critical! #soleus #calftraining #fatloss #legday #fitnessscience

Dr. Gains

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Friday 03 July 2026 23:11:13 GMT