good night from sleep are essential for our physical and mental health. Because of this, it is very important to avoid some habits that could compromise the quality of those hours of rest. Between them, sleep with light on, even at low intensity, in addition to reducing the depth of sleep, can harm your health, especially your heart health.
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Sleeping in a bright room, even if dim, can activate our autonomic nervous system. When this happens, our heart rate is a little faster, which is common only during the day. In this way, there is a direct impact on the circadian cycle and, mainly, on insulin resistance.
Including, this effect can directly affect some people's ability to gain or lose weight. According to scientists, healthy people, if exposed to light during sleep, may become overweight and obese. After all, when there is a certain difficulty in regulating glucose, the pancreas starts to produce much more insulin, increasing the blood sugar level even more.
Through research, it was possible to realize that exposure to moderate light (100 lux) makes our body enter a state of alert, which causes our heart rate to be increased. Soon, it ends up affecting the force with which the heart contracts and the speed that the blood is driven by the blood vessels.
To avoid the impact of light, it is recommended to close curtains and turn off lamps or televisions. This is an excellent way to avoid the risk of heart disease and insulin resistance, especially if you already have a predisposition to these conditions. In a short time, you may even notice an improvement in the quality of your sleep.
Of course, having the light on at night is no reason to despair either, especially when this is a necessary habit. If you prefer, you can invest in lower intensity lamps (3 lux) and with an amber or orange color, as they are less stimulating for the brain.
