Dr. Laura Farah
(Jordan)
Consultant Clinical Dietitian
Nutrition Consultancy Center
Exercise plays an important role while dieting, as it gives a person a sense of confidence, which helps to adhere to diets, in addition to improving the efficiency of blood circulation, and exercise also increases the body’s metabolism and the process of burning calories in foods, which helps to lose weight, and exercise also helps to tighten the body to prevent the appearance of wrinkles and sagging, and helps to relieve back pain because it strengthens the abdominal and back muscles, and is also beneficial for patients with heart disease, blood pressure and diabetes, and helps to strengthen the body’s immunity, and has a major role in improving memory and concentration, reducing symptoms of attention deficit hyperactivity disorder (ADHD), delaying aging, and also helping to sleep.
Exercise also calms the nerves and relieves psychological stress and depression because it stimulates the secretion of a chemical in the brain called (beta-endorphin), and this substance contributes to raising morale, and exercise also plays a role in raising the hormones of happiness “dopamine and serotonin”. The best types of exercise are brisk walking, running, aerobic exercises and swimming, taking into account starting with light exercise for a period of 20-30 minutes and about 3 times a week, while trying to increase the exercise time by 10% every week, but it is important to stop any type of exercise when feeling tired or having a very fast heartbeat.
It is preferable that the time period between eating and exercising is not less than two hours at least, in order to avoid exhausting the body and not distributing blood well in the body, because when exercising, the heart starts pumping blood to the muscles to perform muscular effort, and when eating, the heart starts pumping blood to the stomach to perform digestion processes, and therefore the body cannot perform two efforts together, which leads to not distributing blood well in the body to perform exercise and digest food at the same time, so there is dizziness and fatigue while exercising, and vomiting may occur as a result of pressure on the abdominal muscles during exercise, because the stomach contains food that has not been digested and absorbed yet.
When exercising, fat turns into carbon dioxide and water, but the effective and essential organ that plays the most important role in burning fat is the lungs. The body gets rid of the water that is formed as a result of burning fat through urine and sweat, and the body gets rid of carbon dioxide through breathing, but the largest part of fat burning leaves the body through the lungs, after fat turns into carbon dioxide, since fat molecules are organic compounds made of carbon atoms and in the presence of oxygen they oxidize to produce carbon dioxide and water. According to the latest studies, researchers have shown that during weight loss, 84% of the lost fat turns into carbon dioxide and leaves the body through the lungs, while the rest turns into water. For example, if you lose 10 kilograms, 8.4 kilograms of it will leave your body through the lungs, while 1.6 kilograms leave in the form of water. Taking into account that it is necessary to burn 7,000 calories to lose 1 kilogram of body weight, the burning is initially from sugar and then glycogen stored in the liver and muscles, but after half an hour or an hour, fat burning begins, and this depends on the type of exercise, its duration and intensity.