The reason for this is that our cardiovascular system and our respiratory system are not conditioned. When we start conditioning, at first, our heart beat goes up to high levels even with very moderate forms of exercise.
Any change in lifestyle involving massive change in physical activity should be under doctors supervision. Burning more energy will require eating more, but even if a person eats more, the person can more easily lose fat by working out. The muscles, bones, organs, and other tissue will become stronger to handle the impact that exercise will give to them. The person will feel better because of having more endorphins in their brain. The muscles will increase their efficiency and more blood vessels will be created in the muscles. The arteries, veins, and capillaries will become more efficient to handle the increased blood circulation. This will allow the person to breathe less when resting, making them feel better. The lung capacity and efficiency at transferring material between the air and the bloodstream will increase to handle the extra oxygen required during aerobic exercise.
This will allow the person to have a lower heart rate when resting, and make them feel better. Their heart will be stronger, and pump more blood per heartbeat, making it more efficient, to handle the increased blood circulation required for aerobic exercise. They are released to reduce the pain a person feels during aerobic exercise.Ī person who regularly does aerobic exercise will develop a healthier and stronger body. Sustained aerobic exercise for a long period of time, like during a marathon, can be euphoric because of endorphins. They are sort of like the body's natural pain medicine, and they make a person feel good. One good benefit of getting aerobic exercise is the release of endorphins, which are chemicals in the brain that reduce the feeling of pain and make a person feel better. When a person experiences pain in their muscles because of working out, it is usually because of lactic acid building up (unless the person has pulled a muscle or damaged something).
When the liver cannot remove the toxins as fast as they are created, they build up. When it does happen, the muscles will produce many toxins that are created during anaerobic respiration, and then the liver will try to cleanse those toxins as fast as it can. This usually happens during any aerobic workout, if the person is trying to push him or herself. When this happens, the muscles will shift to anaerobic respiration until they can get the oxygen they need. The body will try to get oxygen to the muscles as fast as it can, but it is not always able to give the muscles all the oxygen they need. Lactic acid is produced and will cause a burning sensation in the muscles. To get more oxygen into the bloodstream, and get toxins out, the breathing rate increases, and the lungs expand and contract more. Aerobic heart beat increases, to circulate the oxygen in the blood to the muscles faster, and remove toxins from the cell faster.
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