After spending time on the beach or on a sun-drenched terrace, many people feel tired and lethargic.
Let's figure out why heat makes us feel sleepy.
In fact, it's very simple: in hot weather, our body has to work hard to cool down.
This is how our body signals the need to dilate blood vessels so that more blood flows closer to the surface of the skin, cooling down faster.
By the way, this fact explains why some people turn red in the heat.
In addition, our body secretes sweat, which cools the skin when it evaporates. In conditions of extremely high temperatures, more sweat is needed, which increases the heart rate and speeds up the metabolism.
The extra work done by the body, although it is unnoticeable to the person himself, makes him feel depressed and sleepy.
In addition, people often do not drink enough fluids, which leads to dehydration, a typical symptom of which is fatigue.
So if you want to stay alert, try to drink more, avoid staying in the sun and spend more time relaxing in the shade.
