Heat and Children's Behavior: Why Babies Cry and Teens Get Irritable When It's Too Hot When the thermometer stubbornly climbs, we adults feel exhausted, listless, and irritable. But if we find it hard, what about children? Their bodies are a delicate, not yet fully tuned system. Heat for a child is not just discomfort, but a real test that changes behavior, mood, and even the ability to think. Many parents notice that on hot days, their usually calm and compliant baby suddenly becomes uncontrollable, or vice versa, falls into apathy. This is not a whim, not "misbehavior" or poor upbringing. This is physiology. And to help your child survive the summer heat without losses, it is important to understand what is happening in their body and brain. Thermoregulation in Children: Why They Overheat Faster The child's body is structured differently than an adult's. The main difference is the ratio of body surface area to mass. In children, it is significantly higher than in adults. This means that they lose heat faster in a cool environment, but also heat up faster in hot weather. Moreover, sweating in children is not yet perfect: sweat glands begin to work actively only at the beginning of school age, and in infants they are almost not developed. Therefore, their main cooling mechanism - the evaporation of sweat - works not at full strength. In hot weather, the child's body tries to cool down by expanding the blood vessels of the skin, but the blood flow is redistributed so that internal organs may suffer from a lack of oxygen. This leads to dizziness, weakness, nausea. And the brain, especially its prefrontal cortex, which is responsible for self-control and emotions, receives less energy. This is why there are mood swings, inability to concentrate, and sudden tantrums. Behavioral Reactions: From Hyperactivity to Complete Lethargy Interestingly, heat affects different children in different ways. Some become hyperactive: they run around, scream, can't sit still, as i ... Read more