TikTok is baffled by sorority cold rooms—dark, freezing bunk-filled spaces where students sleep. Here's the surprising reason ...

Ultimately, the answer is yes, sleeping with light in the same room is bad for you. The study that Zee and her colleagues ran showed that people who slept through the night in rooms with light ...

Sleeping in a cold room may also fight the aging process. More anti-aging hormones, known as melatonin, are reportedly released from the body in a cold room than in warmer temperatures.

They designed a small study with 20 people. All of them spent the first night sleeping in a mostly dark room. Then, the second night, half of them slept in what Zee describes as moderately well lit.