Myokines: How Muscles Talk to your Body

Your muscles aren’t just motors—they’re endocrine organs. In this video, we explain myokines—the messenger molecules your muscles release when you exercise—and how they regulate metabolism, fat burning, insulin sensitivity, tissue repair, and muscle growth. Clear analogies (post office, group chat, see-saw) make complex science easy. What you’ll learn What myokines are and why muscle is an endocrine organ IL-6 (fuel dispatcher) vs. FGF21 (energy accountant), apelin (repair foreman), BDNF (signal booster), decorin ↔ myostatin (growth see-saw) How myokines improve metabolic health (adipose, liver, pancreatic β-cells) What actually releases them: cardio + strength, intensity, muscle mass involved Aging & sarcopenia: why responses are slower—but still real; how BFR can help Practical playbook: progressive overload, protein, sleep, and mixing training modes Who it’s for: athletes, coaches, clinicians, and anyone curious how exercise biology really works—hypertrophy, fat loss, insulin resistance/Type 2 diabetes, and healthy aging. Disclaimer: Educational content; not medical advice. Tags/Keywords: myokines, exercise hormones, IL-6, FGF21, apelin, BDNF, decorin, myostatin, irisin, endocrine organ, skeletal muscle, metabolism, insulin sensitivity, fat oxidation, hypertrophy, resistance training, endurance training, blood flow restriction, BFR, aging, sarcopenia, sports science References: 1. Cornish SM, Bugera EM, Duhamel TA, Peeler JD, Anderson JE. A focused review of myokines as a potential contributor to muscle hypertrophy from resistance-based exercise. Eur J Appl Physiol. 2020 May;120(5):941–59. 2. Cornish SM, Bugera EM, Duhamel TA, Peeler JD, Anderson JE. A focused review of myokines as a potential contributor to muscle hypertrophy from resistance-based exercise. Eur J Appl Physiol. 2020 May;120(5):941–59. 3. Jaśkiewicz Ł, Romaszko-Wojtowicz A, Chmielewski G, Kuna J, Krajewska-Włodarczyk M. Effect of myokines on bone tissue metabolism: a systematic review. Bone. 2025 Dec;201:117654. 4. Laurens C, Bergouignan A, Moro C. Exercise-Released Myokines in the Control of Energy Metabolism. Front Physiol. 2020 Feb 13;11:91. 5. Severinsen MCK, Pedersen BK. Muscle–Organ Crosstalk: The Emerging Roles of Myokines. Endocrine Reviews. 2020 Aug 1;41(4):594–609. 6. Zunner BEM, Wachsmuth NB, Eckstein ML, Scherl L, Schierbauer JR, Haupt S, et al. Myokines and Resistance Training: A Narrative Review. IJMS. 2022 Mar 23;23(7):3501. 7. Pedersen BK, Åkerström TCA, Nielsen AR, Fischer CP. Role of myokines in exercise and metabolism. Journal of Applied Physiology. 2007 Sept;103(3):1093–8. 8. Lee JH, Jun HS. Role of Myokines in Regulating Skeletal Muscle Mass and Function. Front Physiol. 2019 Jan 30;10:42.