In this episode, I discuss how you can live better and longer through strength-based training and exercise. I share the story of John, an 84-year-old man whose biological age is decades behind his chronological age. I explain how our bodies lose lean muscles as we age—leading to eventual decline—and how the environments we spend our time in can be health-enhancing or health-depleting. I also outline the key benefits of strength training on aging, metabolism, mental health, and vitality and offer advice on starting strength training as a habit.