Which practice is NOT part of standard sleep hygiene?

• A. Using bright screens right before bed
• B. Maintaining a consistent sleep schedule
• C. Limiting caffeine intake
• D. Establishing a pre-sleep routine

Answer: (A)

Using bright screens right before bed disrupts sleep because the bright light, especially blue wavelengths, signals the brain to stay awake and suppresses melatonin. This makes it harder to fall asleep and stay asleep, so it isn’t a component of good sleep hygiene. In contrast, maintaining a consistent sleep schedule helps regulate the body’s internal clock, making sleep more predictable. Limiting caffeine reduces nighttime stimulation that can delay sleep. Establishing a pre-sleep routine helps the body wind down and signals that it’s time to sleep. Together, these practices support healthier sleep, while bright screen use at night undermines it.