Lumie Bodyclock Starter 30 wakes you up gradually with a simulated sunrise. The brightening light brings you gently out of sleep, prompting your body to suppress the sleep hormone melatonin while increasing hormones like cortisol to help you get up and go. It provides a fantastic start to the day for sufferers of SAD (Seasonal Affective Disorder) and helps non-morning people to feel brighter and more energetic.Waking to natural light resets your sleep/wake cycle and has been shown to boost your mood, productivity and energy levels all day. Our physiological body clocks are aligned by sunrise and sunset and can be thrown into disarray by modern life. We feel tired and stressed waking early for work or school. Bodyclock restores the rhythm, helping you feel awake during the day and ready to sleep at night.