The Science of Sleep

The video explores the importance of sleep, explaining the role of circadian rhythms and hormones like cortisol and melatonin. It details the stages of sleep, highlighting the body's critical functions during rest, such as brain activity and memory consolidation. The video also discusses energy conservation and shares fun facts about sleep needs in different animals. It concludes with health tips for better sleep and encourages viewer engagement.

What is the primary cue that influences our circadian rhythms?

• Light

• Sound

• Temperature

• Food

Which hormone is released by the brain to keep us awake during the day?

• Melatonin

• Serotonin

• Cortisol

• Dopamine

What are the deepest stages of sleep known as?

• Dream sleep

• Slow wave sleep

• REM sleep

• Light sleep

How does sleep contribute to memory?

• It creates new memories

• It consolidates and stores information

• It has no effect on memory

• It erases all memories

What percentage of your body's blood is sent to the brain during sleep?

• One half

• One tenth

• One fifth

• One third

How much of our life do we spend sleeping if we sleep 8 hours a night?

• One fourth

• One third

• One half

• Two thirds

How many hours of sleep does a giraffe need each day?

• 1.9 hours

• 5 hours

• 12 hours

• 8 hours

Which animal requires the most sleep per day?

• Human

• Brown bat

• Elephant

• Giraffe

What should you do if you have trouble falling asleep?

• Ignore it

• Talk to your doctor

• Drink coffee

• Watch TV

Why is a good night's sleep essential?

• It is not essential

• For physical health only

• For mental health only

• For both physical and mental health