A simple way to keep your muscles strong as you get older (and it  isn't  exercise)  This one step can strengthen aging muscles, boost your immune system, and even help you manage your weight. It’s normal for our muscles to lose tone and become a bit flabby as we age. But just because it’s normal, it doesn’t mean it’s good. Not only are flabby muscles unsightly, they’re also a sign that we’re losing muscle mass and strength. Losing muscle mass makes it harder to do the things you take for granted. Like walking up stairs. Lifting a bag of groceries. Or recovering your balance instead of falling. Losing strength also makes you more prone to injuries that can keep you from enjoying the activities you've loved for years. It's a major reason people lose mobility and end up in nursing homes. We all want to stay strong and vital for as long as possible. So many of us turn to exercise. While a regular exercise program can help, it’s often not enough. W...