Five surprising facts about sleep: you definitely didn't know this

Sleep is an integral part of our lives, as each person spends about a third of their life sleeping. In this article, SSPDaily tells about 5 intriguing facts about nighttime rest.

Some people have black and white dreams

Did you know that about 12% of people dream in black and white? Interestingly, this percentage has dropped significantly since the widespread introduction of color television. Previously, about 75% of people reported having black and white dreams.

Sleep is different for men and women

Although the need for sleep is universal, men and women show some differences. The National Sleep Foundation (USA) suggests that men tend to have a circadian rhythm 6 minutes longer than women. This difference leads to women being more prone to a shorter sleep cycle, which leads to earlier waking.

Sleep strengthens the immune system

When flu season begins, getting enough sleep plays an important role in maintaining a strong immune system. Experts recommend sleeping 7 to 8 hours a night. This healthy sleep duration provides your body with the recovery time it needs to keep your immune defenses in top shape.

Brief awakenings in the middle of the night are normal

Have you ever wondered why you sometimes wake up in the middle of the night for no apparent reason? Don't worry, it's completely natural. Sleep is a dynamic process that consists of different stages, and these stages are accompanied by brief awakenings.

Smells cannot wake a person up

While noise has the ability to wake us up from sleep, odors, on the other hand, do not have the same ability. Numerous studies have shown that olfactory stimuli are ineffective in waking us up. It was this understanding that led to the invention of fire alarms, which rely on auditory cues to alert us to potential danger.