The aim of the experiment is to find out the effect exercise has on the body, and why these changes take place in the body.
Respiration is the physical process by which living organisms take in oxygen from the surrounding medium and emit carbon dioxide. The term respiration is also used to refer to the liberation of energy, within the cell, from fuel molecules such as carbohydrates and fats. Carbon dioxide and water are the products of this process, which is sometimes called cellular respiration to distinguish it from the physical process of breathing. Cellular respiration is similar in most organisms, from one-celled organisms such as the amoeba and paramecium to higher animals.
Though the right lung has three lobes, the left lung, with a cleft to accommodate the heart, has only two. The two branches of the trachea, called bronchi, subdivide within the lobes into smaller a of the body, and carbon dioxide diffuses out of the blood into the lungs, where it is exhaled. And smaller air vessels. They terminate in alveoli, tiny air sacs surrounded by capillaries. When the alveoli inflate with inhaled air, oxygen diffuses into the blood in the capillaries to be pumped by the heart to the tissues.
I think that if you exercise for a longer period of time respiration will increase and so will your heart and breathing rate. Our breathing rate increases when we exercise because we are breathing more quickly and because our muscles are working harder they need more oxygen. Also the extra carbon dioxide, which we produce, must be removed quickly otherwise it might build up and poison our tissues. We do not have to think about removing the carbon dioxide as it happens automatically. The senses in the brain detect that there is too much carbon dioxide in the bloodstream, and this automatically causes the body to breathe much faster. We not