1. B. Do aerobic exercises several times a week
2. D. All of the above
3. C. Light from bluish-white bulbs, during the day
4. D. All of the above
5. B. Going into another room for 20 minutes and reading a dull magazine or book
6. D. Waking up and falling asleep at the same time, even on weekends
7. C. Late-night food cravings
8. B. Lyndon Johnson