Things I learned:
- You feel tired on Thanksgiving because you ate a lot, not because of turkey's tryptophan. In fact, chicken and beef have as much of the sleep-related chemical; cheese and pork have more.
- Shaving hair doesn't make it darker or coarser. It's just that the hair coming in has not been bleached by sunlight and doesn't have the fine taper of an unshaven hair.
- Reading in dim light is fine. While it may be uncomfortable, it won't cause any permanent damage to your eyes.