Physical exercise is a great way to tone your body and lose weight. There are two basic types of exercise: aerobic and anaerobic. Aerobic exercise promotes cardiovascular fitness by raising your pulse to a targeted level. It's recommended that you exercise at your target heart rate for thirty minutes, three times a week. These exercises strengthen your heart, and allow the heart to pump more blood. Aerobic exercise improves the capacity of the lungs, helps control weight, and increases muscle and joint flexibility, making you less susceptible to injury. Some examples of aerobic exercise are walking, jogging, bicycling, swimming, racquetball, and aerobic dance. Aerobic exercise also helps to reduce risks associated with developing heart disease. Anaerobic exercise focuses on specific muscles, with a goal of increasing their strength, mass, and/or endurance. Weight lifting is an example of anaerobic exercise. This form of exercise won't provide as many benefits as aerobic exercise, but it's a good supplement to your aerobic workout, and can also help increase bone density. Remember, there are many advantages to regular exercise. It can help you sleep better, handle stress better, and even improve the way you look and feel. An ideal exercise program will include both aerobic and anaerobic activity. However, the program should be tailored to your individual needs. If you're over thirty-five or have had medical problems, talk to a doctor before beginning your exercise routine. For more information on aerobic and anaerobic exercise, speak to a health care specialist.