Managing light exposure is crucial for shift workers to maintain fitness and a good family life.

“But light is a very important aspect of that. Particularly, individuals who work the night shift, they come home and they try to sleep throughout the day in a dark room, of course. And then, if it is winter time, they barely get any light, any sunlight or bright light. At work, you never get...indoor environment, we rarely get more than 1000 lux of light. So these people are continuously staying, kind of, in a dim winter environment during that night shift. And so that's one area where managing light will have a huge impact on productivity, health, social life, etc.”