that's one reason why sleep is important. 50 christina bloom and her team are trying to find out which factors influence sleep and how they conduct a series of experiments with test persons changing one variable each time. ah, in vasa, shifting near in basil, we're very interested in the role play by light tags daylight and also artificial light, especially in the evenings. and often men speaking laugh once the tests subject to sleep. the researchers record their brain activity with an e gene and identify and evaluated various sleep stages. the large and slow waves depict the deep sleep rays which is essential for restored of sleep, but which specific factors make sleep restorative? that's what christina bloomer wants to find out loud at us beth, for filaments. i'd say that for many people had a light, especially the natural daylight outside. i as one of the most underestimated factors when it comes to a good night sleep, i want them to me, so we want to know how much daylight you need for it to have a significant positive effect on sleeve. in this math, i'll finish off the harbor as f