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Shut Up Legs: The Science of Mental Fatigue and Physiological Limits in 2026 Endurance Sports
"The phrase "Shut up legs" is a legendary mantra popularized by Jens Voigt, representing the psychological override of physiological pain signals during extreme physical exertion. In 2026, the intersection of sports physiology and cognitive science allows us to move beyond the colloquialism to understand the exact mechanisms governing muscular fatigue and the central governor model of athletic performance. The Neurobiology of Perceived Exertion and Muscular Failure The sensation of the legs "shutting up" is rarely a complete failure of the muscle fibers themselves. Rather, it is a complex feedback loop between the peripheral nervous system and..."
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