Understanding Sleep and Circadian Rhythms

What hormone is produced by the body clock at night?

• Serotonin

• Adrenaline

• Melatonin

• Cortisol

How many stages of sleep does the body cycle through on a good night?

• Five

• Three

• Two

• Four

What is the primary function of delta sleep?

• To induce dreaming

• To increase heart rate

• To repair bones and muscles

• To enhance memory

What happens to the body during stage four of sleep?

• The body becomes paralyzed

• Heart rate increases

• Breathing becomes rapid

• Muscles twitch

What is the impact of sleeping less than seven hours per day?

• Increased risk of chronic conditions

• Improved memory

• Better mood

• Enhanced physical performance

What is the role of the circadian rhythm?

• To manage stress levels

• To enhance cognitive function

• To control the sleep-wake cycle

• To regulate digestion

What is the effect of modern lifestyles on sleep?

• Increased sleep duration

• Decreased sleep duration

• Improved sleep quality

• No effect

What is the main difference between early birds and night owls?

• Night owls wake up earlier

• Early birds sleep less

• Night owls have a shorter circadian rhythm

• Early birds are more active in the morning

How can you change your sleep schedule?

• By drinking coffee

• By sleeping more on weekends

• By sticking to a strict schedule

• By taking sleeping pills

What is the role of light in regulating the circadian rhythm?

• It helps track the day-night cycle

• It helps produce adrenaline

• It has no role

• It increases heart rate