Aerobics

A lot of people have heard the terms aerobics and anaerobic, but most people don't know what those terms mean. These two terms refer to the presence

and absence of oxygen. Our bodies cells choose to get the energy that they need using oxygen to fuel metabolism. During an aerobic activity the muscle cells can contract repeatedly without fatigue. During anaerobics the muscle cell doesn't rely on oxygen to fuel the muscle contractions. It relies on its natural body chemicals. Aerobics is a low to moderate exercise that lasts longer than ninety seconds. Anaerobic is a medium to high intensity exercise that lasts no longer than two minutes.

Aerobic exercise tones you muscles which improves you overall blood circulation.

It also helps improve you respiration system by strengthening your muscles that aid the

airflow. By doing aerobics on a regular basis it will strengthen your lungs and blood

system. It also increases your cardiovascular rate which helps the heart become

stronger. Aerobic exercises also reduces your risk of heart disease, vascular disease, and

diabetes. It also helps people who are trying to quit smoking by alleviating their cravings

and improving lung function. Regular aerobics like walking helps reduce the symptoms

of depression, stress, and anxiety. People who have high cholesterol and high blood pressure can reduce it by doing aerobic exercises.

Unlike aerobics, anaerobic exercises helps in strengthening muscles. By building

more muscle, you'll burn more fat and help protect your joints. By protecting your joints

it will keep you from getting any future injuries. There are two kinds of anaerobic

exercise: isotonic and isometrics. Isotonic uses your muscles to compress against an

object with movement, like strength training. Stronger muscles, stronger bones and

preventing injuries are just some of the benefits of isotonic exercises. Contracting your

muscles against resistance without movement is an isometric exercise. For example, while lifting a dumbbell and hold it in position you are isolating that muscle. Studies have shown that people who do not participate in strength training exercises as they age will loss bone mass and gain fat. Another study found that after the age of thirty , every ten years she will lose five pounds of muscle and she also loses ten percent of her bone mass. She then gains an extra ten pounds of fat. At the age of fifty, her body will be at least fifty percent body fat and she will lose about twenty percent of her bone mass. As people age their muscles become less dense. It makes the arms and legs look much thinner. The muscle tissue becomes less flexible and it loses its tone. By using anaerobic exercises it can help increase the muscle and bone density of elderly people.

One of the disadvantages of aerobic exercise is decreased muscle mass. As you

lose muscle mass, you lose all of the calorie burning and metabolic benefits of that tissue.

This combination leads to a "Slower Metabolism." By having a slower metabolism your

body takes longer to break down the nutrients in your food to produce energy. Anaerobic

doesn't speed up your metabolism either, but it does burn fat and increase your muscle

mass which increases your resting metabolic rate. After only thirty minutes of anaerobic

exercise your body continues to burn extra calories for hours afterwards. Working out at such a high intensity causes your muscles to fatigue. Your muscles become sore and weak causing your muscles to rely on aerobic metabolism . With aerobic exercise