Training for HYROX? Elite 15 athlete and world record holder shares his total-body hybrid workout

Learn starts his training day with threshold running intervals, which he says are the most challenging part of his training.
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I'm 74 and in the best shape of my life—here's the weekly workout routine I swear by

"Considering my age, I am much more aware of what I should be doing, and am more educated regarding wellness, fitness and ...