5 Questions
What are the two main sources of signals that make us feel sleepy?
Signals from our body and signals from the environment
Why do we feel sleepy when it's dark outside?
Because our environment is sending signals to our brain
What is the primary function of signals from our body?
To tell our brain we are tired
What happens when our brain receives signals from our body and environment?
We feel sleepy
What is the relationship between darkness and sleepiness?
Darkness makes us feel sleepy
Test your knowledge about the science behind sleepiness and the factors that affect our sleep patterns. Learn about the internal and external signals that regulate our sleep and wake cycles. Discover how our bodies respond to daylight and darkness. Take this quiz to find out more!
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