Turning 40 years old means that your body is probably not going to withstand the kind of stress and work that it withstood when you were 20 years old. Fitness over 40 is therefore a very helpful way to deal with your body which is losing its agility and muscle deterioration. Your muscle mass will decrease 15 percent every ten years after you are 40, and even more after 70, so it is vital now to keep fit and in shape to maintain the muscle mass that you have now. Since aging is a very natural thing, fitness over 40 should be viewed as a natural process to stay fit and healthy. By doing so, you will find you will feel youthful and energized as if you were years younger! Staying Trim with Cardio Exercise Having a good cardio routine at least 3 times a week will keep you energized and trim. With cardio you will also reduce your chances of getting heart disease or failure. By taking a brisk walk, a refreshing run, or a bike ride at least 20 minutes 3 times a week will help you not only...