There is more to being healthy than just not getting sick. Being healthy means keeping your body working as efficiently as possible. Good hygiene is one practice that will help keep you healthy. You also need to keep your body fit. You can do this by exercising and staying active. One from of exercise is aerobic exercise. Aerobic activity requires your body to use a lot of oxygen. Anaerobic exercise is activity that does not require the cells in your muscles to use oxygen. Anaerobic exercise helps build muscle mass. There are many benefits to being active and exercising your body. Whether or not your body is a healthy weight can be determined by examining your body’s composition. Good nutrition is another healthful habit. You can get the vitamins, minerals, and other nutrients that your body needs by eating a variety of foods. Good sleeping habits are also an important part of healthful living. It is also important to stay away from harmful substances, such as tobacco, alcohol, and drugs.