Melatonin is naturally produced in the body to guide your sleep-wake cycle, essentially serving as the body’s biological clock and helping to maintain normal sleep patterns.† Darkness signals the brain to produce melatonin, preparing the body for sleep. Melatonin production continues until sunrise, when light signals the brain to stop. A change in your child’s bedtime routine or the use of electronic devices just before bed are a couple of things that can disrupt normal melatonin production and make falling asleep more difficult.†