Here's a popular one from the archives perfect for a time of year when people are getting active in the cold. Kris Gethin is a bodybuilder, fitness model, and supplement entrepreneur who has been the face of some of fitness' biggest physique campaigns. He's also a passionate endurance athlete who has a ton of knowledge on balancing muscle growth and strength gain with long-duration training for triathlons and distance events. We talk to Kris, the founder of Kaged Muscle, about these strategies and more.