Brandon Heavey's story is epic: He's a former NASA engineer who, after a personal fitness revelation, decided to change careers and become a fitness trainer. Heavey swapped Mars rovers for squat cycles and never looked back. Now nearly a decade into his second career, he's one half of the husband/wife duo behind Evidence Based Athlete, using his scientific mind to help optimize results for elite athletes and reformed couch potatoes alike. We talk about his transition from the world of space exploration to fitness closer to home (though the conversation also touches on the future of fitness in zero-gravity). We also talk about his successful podcast — publishing weekly for five straight years! — and the problem with most strength training studies. Brandon is one of the most prolific evidence-based trainers and podcasters around, and he shares some serious knowledge here!