“For people who work the night shift, getting enough high quality sleep can be a significant challenge.

Night shifts often interfere with a person’s circadian rhythms, the 24-hour cycle that tells the body when it’s time to sleep or to be awake.  Trusted SourceUpToDateMore than 2 million healthcare providers around the world choose UpToDate to help make appropriate care decisions and drive better health outcomes. UpToDate delivers evidence-based clinical decision support that is clear, actionable, and rich with real-world insights.View Source Circadian rhythms synchronize with exposure to light, with darkness serving as a sleep cue and daylight signaling that it’s time to wake up.

For this reason, people who work night shifts often feel sleepy when they need to work and alert when they want to sleep. These challenges can have serious health and safety consequences, so it’s important for people who work night shifts to carefully plan their sleep schedules and adopt strategies to get the sleep they need.”

Sleep Foundation (The Best Sleep Schedule for Night Shift Workers | Sleep Foundation)