Which of the following is NOT a component of adequate sleep hygiene?

Using cell phones before bedtime is indeed not a component of adequate sleep hygiene. This practice can interfere with the quality of sleep due to the blue light emitted from screens, which has been shown to suppress melatonin production, making it harder for individuals to fall asleep. Good sleep hygiene emphasizes creating an environment and routine that promotes restful sleep, including habits that reduce distractions and enhance relaxation before bedtime.

In contrast, maintaining a consistent sleep schedule, ensuring a dark sleep environment, and avoiding caffeine before sleeping are all essential practices that contribute positively to sleep quality. A regular sleep schedule helps regulate the body's internal clock, a dark environment encourages the natural sleep-wake cycle, and avoiding stimulants like caffeine in the hours leading up to sleep helps facilitate easier transition into sleep. Each of these practices serves to enhance overall sleep quality, making it crucial to integrate them into a nightly routine.