You probably know how important daily exercise is for your physical and mental well-being, and you may even have a routine you try to stick to during the week. But are you incorporating strength training into your workouts, or strictly cardio? If you fall into the latter category, it’s time to start strength training, because cardio will only take you so far. You need strength training to maintain muscle mass and mobility . This is especially important as you age, as both men and women lose