First, the not-so-great news: Starting at around age 30, you naturally begin losing muscle. In fact, adults lose 3 to 8 percent of their lean muscle mass per decade. And by age 60, your muscle strength will deteriorate at a rate of 3 percent per year. With less strength to muster, daily activities (such as carrying bags of groceries or mowing the lawn) become harder, … Continue reading Clock stoppers: the best exercises for your 40s and beyond