Exposure to bright light at the wrong times alters the body’s internal clock, or circadian rhythm, and can make your brain stay up later than you intend.

That’s why, for example, it is ideal to avoid using a mobile phone or laptop before bedtime.

A good sleep-and-wake cycle is extremely important for many functions in our everyday life. We recommend that you use EVY LIGHT® through the first half of the day, if possible.