Final answer:
The answer to the question is that avoiding eating or drinking anything before bedtime is not a CDC recommendation for proper sleep hygiene.
Step-by-step explanation:
The CDC recommendation that is NOT for proper sleep hygiene is avoid eating or drinking anything before bedtime. While it's true that avoiding heavy meals before bed can aid sleep, a small, healthy snack can actually be beneficial for some people. To maintain healthy sleep hygiene, the CDC suggests being consistent with sleep schedules, ensuring a comfortable sleep environment, removing electronic devices from the bedroom, and getting regular exercise, though not right before bedtime.