Across
- 2. The daily timing system that helps explain why a teen gets sleepy at similar hours.
- 5. What a student experiences after regularly getting much less sleep than needed.
- 7. The sleep-pressure chemical whose signal an energy drink can temporarily block.
Down
- 1. The nighttime signal that may be delayed by bright screens before bed.
- 2. The stimulant in many energy drinks that can interfere with sleepiness
- 3. The habit shown by waking up at roughly the same time each day.
- 4. Morning exposure that helps tell the brain daytime has started.
- 6. The sleep stage often associated with vivid dreams.