Heatwaves also affect the psyche, psychologist explains why we become more nervous during the heat

High heat doesn't just bring fatigue and physical discomfort. Experts warn that heat waves can seriously affect our mental state, increasing irritability, anxiety and frustration, and in some people, further exacerbating existing psychological problems.

Psychologist Ravi Gill explained to The Independent how intense heat affects the brain and emotions, as well as why during heatwaves we lose our temper more often and find it harder to cope with everyday stress.

"Heat disrupts neurotransmitter systems like serotonin, worsens sleep quality, and increases levels of stress hormones like cortisol, which play a key role in mood regulation and impulse control," Gill said.

He adds that prolonged worry and fatigue reduce emotional resilience, so even the smallest problems can seem unbearable.

"Heat waves can increase tensions in everyday situations, whether at home, in traffic or in public places, so small triggers easily turn into conflicts," warns the psychologist.

High nighttime temperatures have a particularly negative effect on sleep, and quality rest is key to emotional stability.

"At night, the body needs to lower its temperature in order to enter a deep, restorative sleep. When it's too hot, people wake up more often, especially during REM sleep, which is important for emotional processing and memory," Gill explains.

Research also suggests that people with pre-existing mental health problems are more vulnerable during heatwaves.

Lack of sleep can thus increase feelings of anxiety, anger, and emotional instability.

Experts advise some simple steps that can help maintain mental stability during heat waves. First of all, it is important to drink water regularly, and not just when we feel thirsty. Taking electrolytes is recommended because they help the brain and nervous system function properly.

Gil also advises keeping the sleeping area as cool as possible, using fans, airy sheets, and darkening the room during the day.

"Try to do more difficult tasks early in the morning, when temperatures are lower, and take more frequent breaks during the hottest part of the day," he recommends.

Relaxation techniques, such as breathing exercises, light stretches, or yoga in a cool space, can also be beneficial, as they help reduce stress levels and prevent long-term feelings of tension.