For us marathoners from Kerala's lowland heat, living high to boost red cells feels like cheating the sea-level effort that built our lungs. EPO? That's the hormone your kidneys make more of up there—I've seen rivals inject it, but my stamina comes from coconut water and running backwaters at dawn. True endurance is earned where the air is thick and heavy, not in simulated mountains.
#marathon#road-running
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