Building and maintaining strength and muscle mass in your 40s, 50s, and 60s is not only possible but also critical for healthy aging. As we age, sarcopenia (age-related muscle loss) reduces muscle mass by 1–2% per year after 40, and strength declines can impact mobility and independence. However, targeted strength training, proper nutrition, and lifestyle changes can reverse these losses and enhance vitality. Below is a science-backed guide to restoring strength and muscle, tailored for these decades, with practical tips to get started safely. Why Muscle and Strength Decline with Age Biological Changes: After 40, lower testosterone and growth hormone levels reduce muscle protein synthesis. A 2023 Journal of Gerontology study notes a 10–15% muscle mass loss per decade without...