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Definition of Critical Speed (CS): Critical Speed is the boundary between metabolically sustainable and unsustainable speeds, distinguishing the threshold between high-intensity aerobic and anaerobic efforts.   Critical Speed as a Training and Racing Tool: Running at speeds just above or below critical speed, even by a few percentage points, results in significantly different metabolic conditions […]...

If you’re an advocate of injury-free running, you likely place a high value on warming up before your run and cooling down afterward. However, this alone is not enough. You might also engage in interval training to further improve your abilities, but there’s a chance you’re not executing interval training correctly. Therefore, it’s worth ensuring […]...

Are you an ultra marathoner seeking to conquer new challenges and surpass your personal bests? Look no further than Katsuo Stamina, the revolutionary sports supplement designed to elevate your endurance, enhance performance, and accelerate recovery. Crafted in the esteemed labs of Japan, this cutting-edge product is poised to redefine your ultra marathon experience. Key Benefits […]...