
Train in <20°C. Cool palms and forehead + water spray + cold water ingestion.



Heat creates a "Civil War": your body must choose between pumping blood to muscles (for power) or skin (for cooling). Per-Cooling (During): Active cooling during rest intervals is even more potent. Cooling Vests show a massive ~12% performance boost, while Fanning + Water Spray provides ~8% Pre-Cooling (Before): Lower core temp immediately before training. Cold Water Immersion yields the highest benefit (~7%), followed by Ice Slushie Ingestion (~4%).