The Hows, Whys And Whats Of Sleep And Dreams

The Balm for Weary Minds

"Sleep is the balm for hurt minds, nature’s great second course."

- William Shakespeare

Sleep is an absolute necessity for our physical, mental, and emotional well-being. It is during these peaceful hours that we relinquish conscious control of our bodies, and our unconscious minds are allowed to roam freely, giving birth to dreams.

While we have made significant strides in understanding the world of dreams, their true purpose still eludes us. It wasn't until the mid-twentieth century, with the advent of electronic brain monitoring, that we gained deeper insights into the nocturnal adventures of our minds. For centuries, it was believed that the primary function of sleep was to provide rest for the body and mind. However, this notion was dispelled when it was revealed that both the body and mind remain active during slumber. So, if sleep isn't merely for rest, what is its true purpose?

Sleep researchers may not have uncovered the exact reason for sleep and dreams, but they have made intriguing discoveries. While we sleep, our brains function much like offline computers. They remain active, organizing and processing the day's events. Moreover, they assess the body's condition, releasing growth hormones to repair damaged tissues and stimulate growth. Simultaneously, the immune system combats viral and bacterial infections. Some experts even propose that the brain discards trivial information during sleep to prevent information overload, although no memory can be entirely erased.

The era of space exploration presented scientists with a unique opportunity to prove that bodily rest is not the primary function of sleep. Instead, it was found that extended periods of isolation reduced the need for sleep. In other words, the fewer stimuli received from social or external interactions during the day, the less sleep we require. It appears that a sleep control center located at the base of our brain is linked to activity during wakefulness. When this center becomes overburdened, fatigue sets in. However, if there haven't been sufficient external stimuli during the day, the sleep mechanism isn't triggered. Consequently, boredom and lack of stimuli may be responsible for many cases of insomnia. Surprisingly, overstimulation can also lead to sleeplessness.