We are rewriting the definition of intelligence. New late-2025 research has confirmed that skeletal muscle is not just for locomotion—it is the primary endocrine organ responsible for preserving your brain. Host Aris Sterling breaks down the "Muscle-Brain Loop" and explains why sarcopenia (muscle loss) is now statistically linked to fluid intelligence decline. This is not about bodybuilding; it is about neuro-protection. We discuss the critical role of myokines like Cathepsin B and BDNF, and why lifting heavy objects is the only proven insurance policy against cognitive decay.
Sources Referenced:
• The Journal of Neuroscience: Research on skeletal muscle as an endocrine organ and its role in hippocampal neurogenesis.
• Harvard Medical School (Blavatnik Institute): Clinical studies on myokines (Irisin) and their direct impact on Brain-Derived Neurotrophic Factor (BDNF).
• The Lancet Healthy Longevity: 2025 cohort data linking low skeletal muscle index to accelerated executive function decline.
