Running in hot weather causes runner to sweat more, uses more energy to control body temp and fatigue faster. A cool cloth or ice on neck helps.
In ~90-120 minutes of running, the body uses up available glycogen stores for energy. W/out replacing glycogen, brain & body experience fatigue.
Take time to imagine running the perfect race in detail from start to finish. Many athletes use meditation or visualization to improve performance.
3 Rounds for time:
400 meter Run
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