It is generally believed that the cold winter climate requires the human body to consume more heat for protection. However, according to relevant research experiments, the amount of heat a person needs in winter is far less than in summer. An American scientist found that in environments of 40 degrees above and 40 degrees below zero, the human body consumes 1675 more joules of heat in a 24-hour period in hot weather than in cold weather. Therefore, people need to consume more nutrient-rich food in the summer than in winter to make up for the energy expended.
First, it is important to replenish water and salt in the summer. Due to excessive sweating, the body not only continuously loses water but also loses a significant amount of salt through sweat. If not replenished in time, this can lead to an imbalance of water and salt in the body, causing heatstroke symptoms such as circulatory failure and heat cramps. Therefore, in high temperatures, one should replenish fluids appropriately, drinking small amounts frequently, with about 300-500 milliliters at a time being ideal.
Salt replenishment comes from two sources: diet and beverages. A healthy adult needs 18-20 grams of salt per day. Typically, 12-15 grams are already obtained from food, and an additional 5-8 grams from beverages is sufficient. However, the salt concentration in beverages should not exceed 0.2 grams per liter, as excessive salt is also harmful to the body.
In addition, in high-temperature environments, the loss of body fluids can also lead to a potassium deficiency. A person with long-term potassium deficiency is most prone to heatstroke. Therefore, in high temperatures, one should try to eat more potassium-rich foods, such as soybeans, mung beans, broad beans, peas, spinach, and kelp.
Furthermore, one should appropriately consume animal-based foods. Water loss in the body can promote the breakdown of tissue protein. At the same time, the amino acid lysine is excreted the most in sweat, and lysine is abundant in animal foods. Therefore, it is advisable to eat some meat and eggs in moderation. If excessive protein is lost or insufficient intake occurs, it can lead to fatigue, weight loss, dry skin, muscle atrophy, edema, and reduced resistance. Thus, in high-temperature environments, protein intake should be increased, and one should not rely solely on a light diet.
At the same time, one should also eat more vegetables and fruits rich in vitamins. Sweating causes most water-soluble vitamins to be excreted, so it is important to consume more fruits and vegetables to supplement vitamins C, B1, B2, and others.