When people think about longevity, they usually think about cholesterol, blood pressure, blood sugar, supplements, or the latest medication trending on social media. Very few people think about muscle. But muscle is one of the strongest predictors of how long we live and, just as importantly, how well we live. Muscle Is Not Just for Movement Skeletal muscle is often viewed as a mechanical tissue that helps us walk, lift, and move. Muscle functions more like a metabolic and en

This post is part of an ongoing series on how to grow stronger—not just older—with each birthday. If you missed the earlier parts of the series, we first explored how to optimize your diet for metabolic health , followed by a deep dive into the fasting-mimicking diet , a powerful approach for cellular rejuvenation. Now it’s time to move from the kitchen to the gym—or your living room floor. In this post, we’ll focus on exercise, specifically strength training, and why buildi