2. Sweat a lot, and your physical strength is still abundant, as long as you supplement a certain amount of drinking water in time during or after exercise. If sweating is accompanied by dizziness, trembling hands and feet, chest tightness, shortness of breath, rapid heartbeat and discomfort, these are all manifestations of physical weakness.
Extended data?
Sweating is an adaptive phenomenon in life. Secretory nerves of sweat glands are sympathetic nerves and cholinergic nerve fibers. Sweating centers vary from animal to animal, some in the spinal cord and some in the hypothalamus (warm sweating).
Thermal sweating is caused by the increase of external temperature. Generally speaking, all skin will sweat except palms and toes. Regulate body temperature by sweating and dissipating heat. Sitting and working in summer, sweating about 300 grams a day; It can be increased by 10 times during manual labor;
Mental sweating is caused by mental excitement or painful stimulation, and sweating mainly occurs in palms, toes and armpits. When people are nervous, their palms will sweat, which belongs to mental sweating. The incubation period from stimulation to sweating is very short, only a few seconds to 20 seconds. Therefore, under the influence of mental factors such as tension, fear and excitement, nerve impulses spread from cerebral cortex to palmar eccrine glands, and the concentration of norepinephrine increased, which led to the rapid increase of eccrine secretion and excretion activities in a short time, that is, palmar sweating. Some scholars also believe that there is another mental sweating center, which is always in an excited state and produces reactive sweating after being stimulated. Mental sweating is most obvious in the palm of your hand, but also in the back of your hand, head, neck, forearm and calf. When a few people are highly nervous, they may even sweat profusely.
Among warm-blooded animals, goats and rabbits don't sweat, cats and dogs only sweat on their toes, and cows and pigs sweat on their noses. These non-sweating animals regulate their body temperature by shallow breathing and heat dissipation. Horses, donkeys and mules almost sweat all over; The sweat glands except the toe ball belong to apocrine glands; Humans only have apocrine glands in the armpits, and others are exocrine sweat glands. Sweating on animals' feet is considered to prevent slipping when catching prey, which is an adaptive phenomenon in life. The nerve innervation of warm sweat is sympathetic cholinergic nerve fiber, and the nerve innervation of mental sweat is adrenergic nerve fiber. Sweating centers vary from animal to animal, some in the spinal cord and some in the hypothalamus (warm sweating). The human mental sweating center is thought to be in the cerebral cortex. Sweat contains about 0.2% sodium chloride, as well as K+, pyruvate, lactic acid, sugar, creatinine and ammonia.
Reference materials? Baidu encyclopedia-sweat