Dr. Glenn McConell chats with Professor Sue Bodine, an expert on muscle atrophy with inactivity/aging. They discuss muscle size reduction and loss of fast fibers with age, how resistance training can slow muscle atrophy, anabolic resistance, the role of hormones and protein synthesis in muscle aging, the amount of exercise needed to attenuate muscle atrophy, the importance of exercise after bed rest, and the impact of intense endurance exercise on muscle fiber size.