Why Resistance Training Is Non-Negotiable After 40

Between 40 and 70, the average adult loses 8% of their muscle mass per decade, and the rate accelerates after 60. Muscle is not vanity. It is the organ of longevity — the largest reservoir of glucose disposal, the engine of metabolic rate, and the difference between getting up off the floor at 80 and not.

You don't need a complicated program. Three full-body sessions per week, built around five movement patterns: squat, hinge, push, pull, and carry. Two to four working sets each, taken close to failure, with progressive overload tracked in a notebook.

Heavy means heavy for you. A weight you could do for maybe eight to twelve reps before form breaks down. The fear of injury keeps most adults lifting too light for too long — which paradoxically increases injury risk, because tissues never get strong enough to tolerate real life.

Give yourself six months of consistent training before you judge the results. Bone, tendon, and neuromuscular adaptations are slower than the Instagram timeline suggests, but they are profoundly more durable.