Mark Jones is a former Marine and current endurance badass, although he would never tell you that. He has completed Go Ruck Selection after 4 tries and is diving into more endurance adventures including Ruck Fest. Coach Sammy and Scott have a great conversation with him about perseverance, training, your "why" and why it matters, and setting expectations amongst other things! He also shares a great physical challenge we put out there for everyone. Enjoy!