Mark Divine is a retired SEAL with 20 years of service and a best-selling author. He's drawn on his SEAL experience to develop exercise and leadership teachings, notably detailed in his book The Way of the SEAL. This serves as Mark's second appearance on Bulletproof Radio, and follows the release of his latest work, Kokoro Yoga: Maximize Your Human Potential and Develop the Spirit of a Warrior--the SEALfit Way. On today's episode of Bulletproof Radio, Dave and Mark talk about the differences between Kokoro and Ashtanga yoga, combat stress, kryptonite, meditation, visualization, flexibility and more. Enjoy the show!