Mastering sleep encompasses understanding the science of sleep, developing healthy sleep habits, and creating an environment conducive to restful sleep. Below are comprehensive guidelines to help you navigate from a novice to an advanced level in sleep mastery.
### Part 1: Understanding Sleep
#### Sleep Stages
1. **NREM Sleep**
- *Stage 1 (Light Sleep)*: Transition between wakefulness and sleep, lasts a few minutes.
- *Stage 2 (Light