Across
- 4. bad nightmares
- 6. REM
- 9. can't sleep
- 11. what makes you sleep
- 13. 24hr body cycle
- 14. sleep walking
- 15. twitching
- 16. involuntary urination
Down
- 1. changes in a 24 hour cycle
- 2. not proper oxygen at rest
- 3. attacks of sleep
- 5. hibernation
- 7. being awake
- 8. cycle that changes body chemicals
- 10. keeps body in homeostasis
- 12. grind teeth