Why do I sweat so much when I exercise?

Generally, excessive sweating during exercise may be caused by temperature regulation, individual physical differences, hypoglycemia, somatic autonomic dysfunction, hyperthyroidism, and other factors. If experiencing discomfort, timely medical consultation is recommended. Detailed explanations are as follows:

1. Temperature Regulation

During exercise, the contraction of skeletal muscles produces a large amount of heat. To maintain a stable body temperature, the hypothalamus in the brain sends signals to stimulate sweat glands to secrete sweat. The evaporation of sweat removes heat and helps cool the body. It is important to replenish fluids and electrolytes appropriately before and after exercise, such as by drinking sports beverages, to maintain fluid and electrolyte balance.

2. Individual Physical Differences

Individual physical differences, such as the number and activity level of sweat glands, can affect the amount of sweat produced. Some people naturally have more developed sweat glands or are more sensitive to nerve stimulation, so they may sweat more than others under the same exercise intensity. Hyperhidrosis caused by individual physical differences can be alleviated through lifestyle adjustments, such as reducing the intake of spicy foods.

3. Hypoglycemia

Insufficient sugar intake, inadequate production, excessive consumption, or excessive conversion of sugar can all lead to decreased blood glucose levels. During hypoglycemia, hormones such as epinephrine are secreted to promote the breakdown of liver glycogen and gluconeogenesis to raise blood glucose levels. At the same time, these hormones also act on sweat glands, causing increased sweating, which may be accompanied by symptoms such as palpitations and hand tremors. It is recommended to follow medical advice for treatment with medications such as glucose injection, levodopa tablets, and betamethasone tablets.

4. Somatic Autonomic Dysfunction

Somatic autonomic dysfunction is related to long-term mental stress and excessive psychological pressure. The balance between the sympathetic and parasympathetic nervous systems is disrupted, which may lead to abnormal overactivity of sweat glands. This may be accompanied by symptoms such as forgetfulness, irritability, and anger. Patients should follow medical advice for treatment with medications such as oryzanol tablets, vitamin B1 tablets, and midodrine hydrochloride tablets.

5. Hyperthyroidism

Genetic factors, being female, a history of autoimmune diseases, and intense mental stress can all lead to hyperthyroidism. In hyperthyroidism, excessive secretion of thyroid hormones causes an accelerated metabolic rate and increased heat production. During exercise, this heat-producing effect becomes even more pronounced, prompting the body to sweat more to dissipate heat, which may lead to symptoms such as palpitations and insomnia. Patients can use medications such as methimazole tablets, propylthiouracil tablets, and levothyroxine sodium tablets under the guidance of a qualified physician.

Appropriate physical exercise combined with a balanced diet can enhance physical fitness and improve the body's resistance, helping to reduce excessive sweating caused by physical weakness.