Challenging puzzle for experienced crossword solvers
Restful Nights Sleep Science Puzzle
Moderate difficulty suitable for most players
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Across
- 1. Device used to wake someone from sleep
- 3. To briefly doze off, often in the morning
- 4. Biological cycle that regulates sleep and wakefulness
- 5. Electrical activity measured during various sleep stages
- 6. Hormone that signals the body it's time to sleep
- 10. Short daytime sleep often used to boost alertness
Down
- 2. Feeling of fatigue signaling imminent sleep
- 7. State of calmness aiding in falling asleep
- 8. Light intensity influencing the sleep-wake cycle
- 9. Condition characterized by difficulty falling or staying asleep
- 11. Altered state sometimes used for improving sleep habits
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