Dear Doctor: I do not usually sweat when I exercise by walking or running. But when I stop, that is when I start sweating. Why don’t I sweat when doing exercise?
Dear Johnson: The main reason we sweat is to help us cool down. Exercise generates a lot of heat in the muscles, which then should be lost, lest the body becomes so hot, putting one’s health in danger. To keep the body temperature from rising too high, during exercise, the heart pumps large amounts of heat in the blood from the hot muscles to the skin resulting in sweat.
When we sweat, it evaporates off our skins. What we then see on our skins as beads or running sweat is in liquid form but this sweat changes into a gaseous form by evaporating off the skin. Evaporation itself requires heat, which the body loses and ends up with evaporation cooling our bodies.
The amount of sweat that the body produces depends on the temperature of the blood that flows through your brain. When the temperature of the blood rises, one sweats more. During exercise, the heart beats rapidly to pump blood to bring oxygen and by so doing, pumps the heated blood from the muscles to the skin where the heat can be lost among others through sweating.
When one stops exercising, the heart slows down also, pumping less blood to the skin. The heat accumulates in your muscles, causing blood temperature to rise higher, so that one sweats more right after finishing rather than during exercise.
The amount of sweat on our skin when we are exercising or after exercise, depends on many other factors including, the intensity of exercise or factors such as humidity and motion of air in contact with the sweating skin.
Though it could be true that the intensity of your exercise may not be high to cause beads of sweat, or even running sweat, what is true is running or walking affords one more free air movement that fans off the sweat limiting its skin accumulation.
When a person stops exercising, the air around becomes relatively still hence losing the fanning effect leading to sweat accumulation. So what is happening to you is normal, the reason why, after exercise, people have to wait until the sweating goes down before they can take a bath. If they do not wait, they will continue to sweat after a bath several times even when the water is cold.
Dear Doctor: What causes my stomach to pain when I am hungry, and yet the pain goes away after I have eaten? Is it ulcers?
Dear Jennie: Hunger results from the absence of food in the stomach or low blood levels of sugar. In the brain, we have the hunger and satiety centres, which are stimulated most when sugar is low or when there is no food in the stomach. A little honey or gas in the stomach can lead to satisfaction but when the sugar does not properly reach the brain, you keep feeling hungry.
Also known as pangs, hunger pains are feelings of discomfort in the stomach. A hunger pain is often a low-grade discomfort that is strong enough to be noticed. However, some people do experience hunger pains that are somewhat sharp and intermittent. There are several reasons why an individual may experience stomach hunger pain from time to time. Stomach muscle contractions begin to occur when the stomach has been empty for several hours, causing pain. When this is the reason behind the hunger pains, a quick snack is usually sufficient to eliminate the discomfort.
Even when a person has not eaten, they produce acid in the stomach. If one has peptic ulcers, then the acid will enter the wounds and cause pain. This is why people with peptic ulcers get hunger, which they learn to treat by drinking milk, which then mixes with the acid to temporarily offer relief.
This kind of treatment is short-term, which then means that you have to visit a health facility where you will be tested and given appropriate treatment.
Dear Doctor: I am 65, and about two years ago, my tooth was removed. I bled for three days and the right side of my face was swollen. Now my mouth is crooked, the lower lip falls, and my eyes cannot close properly. What can I do because the dentist is not helpful anymore?
Dear Jane: What happened to you could have been due to a weakness or paralysis of the muscles that move either side of the face, resulting from damage to the facial nerve. The nerve from the brain through a hole in the skull runs beneath each ear, to help contract the muscles of facial expression, production of tears, and conveying the sense of taste from the front part of the tongue. These, among other factors are likely to be affected, leading to symptoms like the ones you have.
Hence the damage may result in the mouth turning to the opposite side, food being stuck in the cheek requiring using a finger to remove and the eye on the same side barely closing. Other symptoms may include pain or discomfort around the jaw and behind the ear, ringing in one or both ears, headache, increased sensitivity to sound on the affected side, impaired speech, dizziness, and difficulty eating or drinking. Much as this may not be a life-threatening condition, it can damage self-esteem.