Blue light is light emitted from digital devices such as computers, phones, and TVs. Studies have shown that blue light can disrupt our natural circadian rhythm, making it harder to fall asleep. This can lead to various issues, such as fatigue, irritability, and difficulty concentrating.
Blue light can have such a negative effect on our sleep because it suppresses the production of melatonin, the hormone that helps regulate our sleep-wake cycle. By wearing blue light-blocking glasses, you can reduce your exposure to blue light and help to improve your sleep.