Jet lag happens when people travel large distances in a relatively short amount of time, such as when flying. The sun comes up in a different time zone, while your body is still used to the schedule from the other side of the world. The body’s day/night cycle is out of sync with the reality. Let on its own, it can be days before your biological clock gets used to it. ThePropeaq light glasses reduces the effects until they just aren’t there anymore. In just 30 minutes, the active blue light in the glasses hinders the production of melatonin, the hormone that makes us sleep, and promotes the active production of cortisol, which gives us energy. This gives the body an energy boost as though the sun has just risen. Later, when it’s time for sleep, the red glasses will filter the blue light from screens and lighting, helping you get drowsy.