A former collegiate tennis player and 15x Olympic distance triathlete, Nelson Peña is now a performance coach with an unusual focus -- fitness in the 40s! He's very easily the fittest 40-something I know, and this interview is full of tips for nutrition, fitness, and mental resilience for men in and around the 40s. Nelson can be found on insta @thenelsonpena and online at www.themontaukmethod.com.