What Happens to Your Body and Mind While You Sleep: 8 Surprising Things

While you sleep, your body and mind are busy with a variety of tasks that you might not even be aware of. Adequate sleep of around seven to eight hours a night is important for your overall health and wellbeing. Here are eight surprising things that happen while you snooze.

Your Body Temperature Drops Significantly

During sleep, your body temperature decreases to slow down calorie burning and release melatonin, a hormone that regulates your circadian rhythm.

Toxins are Cleansed

While at rest, your body filters out toxins and repairs damaged molecules, allowing for rejuvenation of the body and brain. Without enough sleep, the brain can’t rid itself of toxins, leading to neurological deterioration.

You Lose Weight

As you sleep, you lose weight by expelling humid air and losing water through perspiration. Since you’re not consuming food or drinks, this effect leads to a decrease in weight by morning. Additionally, sleep regulates hunger hormones, which helps fight off junk food cravings.

You Dream

The mind creates dreams during sleep, and people can spend up to 2 hours dreaming each night.

You Get Taller

While lying down, the discs in your spine decompress and rehydrate, causing you to grow slightly taller.

You May Jerk Involuntarily

Many people experience involuntary muscle contractions that cause sudden jerks while falling asleep, which may even wake them up.

Your Skin is Boosted

Sleep stimulates the production of collagen, a protein that contributes to healthy, youthful skin. Growth hormones released during sleep increase collagen levels, resulting in more resilient and vibrant skin.

You Wake Up – Often

During the night, people wake up multiple times, up to 15 times an hour, typically when transitioning to a different sleep stage. These periods are usually too brief to remember.

Final Thoughts

Adequate sleep is crucial for maintaining good health. Understanding the surprising things that happen to your body and mind while sleeping can help motivate you to prioritize sleep and make it a priority in your life.

Considering the numerous health advantages and intriguing information stated earlier, it is necessary to ensure a substantial amount of sleep every night.

To enhance the likelihood of achieving profound and rejuvenating sleep, steer clear of consuming caffeine too late in the day, maintain a dark sleeping area, and refrain from using electronic devices before going to bed.


1. Why do we dream?

Although scientists have yet to discover a definitive answer, it is believed that dreams serve as a way for our brains to process and make sense of daily experiences. Dreams can also be a way for our minds to work through emotions and memories that we may not be aware of while awake.

2. What happens to our bodies during REM sleep?

REM, or rapid eye movement, is the stage of sleep where we experience the most vivid dreams. During this stage, our brains are highly active, our muscles are relaxed, and our eyes move rapidly. Our heart rate and breathing may also increase and become irregular.

3. Can lack of sleep affect our mental health?

Yes, lack of sleep has been linked to numerous mental health issues, including depression, anxiety, and mood disorders. Chronic sleep deprivation can also lead to cognitive decline and memory problems.

4. How many hours of sleep do we need?

The amount of sleep needed varies from person to person, but most adults require between 7-9 hours per night. Children and teenagers typically require more sleep, while older adults may need less.

5. What is sleep apnea?

Sleep apnea is a common sleep disorder where a person’s breathing is interrupted during sleep. This can lead to snoring, gasping, and even waking up abruptly. Sleep apnea can cause daytime fatigue, headaches, and other health problems if left untreated.

6. How can we improve our sleep quality?

There are many ways to improve sleep quality, including establishing a consistent sleep schedule, avoiding caffeine and alcohol before bed, creating a relaxing sleep environment, and engaging in regular exercise. If sleep problems persist, it may be helpful to consult a healthcare professional for guidance.

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