A recent study published in the Journal of Clinical Sleep Medicine found that those who worked close to windows slept better and longer than those who didn’t. Dr Eric Dyken, a sleep expert, says this has to do with our bodies’ circadian rhythms.

“If you’re in a darker room, you’re sleepier, melatonin seems to increase, and your whole day as such can be screwed up, your daytime and your nighttime. But if you’re wide awake during the day, with […] the early afternoon brightness of the sun, that decreases sleepiness tendency gets you good and going for the day, and then by the time it’s night, you’re ready to sack out.”