Starting in your 30s, you can lose three to five percent of your muscle mass each decade if you don’t stay active. Note the last part of that point: “If you don’t stay active.” As you get older, "there's a lot of competition for your time and energy," says Dr. Yancy. For some men, that can push exercise out of the picture. But it doesn't take heroic efforts to put it back into your life.
“Instead of eating less of everything and feeling deprived, you want to replace more calorie-dense foods, such as fried foods, high-fat meats, cookies, cakes, candies (and) chips, with nutrient-rich, less calorie-dense foods, such as vegetables, fruits, salads, bean dishes, broth-based soups and whole grains like oatmeal,” said Kushner, adding that the high water and fiber content of foods like these increase their volume, making them more satisfying for fewer calories.
Between desk jobs, commutes, and family activities, many 40-somethings don’t have a lot of free time to work out. But it’s important -- for your weight and your overall health -- to fit in at least 2 1/2 hours of moderate physical activity (like brisk walking or light yard work) every week. Pencil times in to your calendar, and make them a priority.