Dr. Jess Andrade says wearing socks to bed could help you get to sleep faster.
Andrade says the heat from the socks will "open up the blood vessels that cool the body down."
A 2018 study in Korea found that those wearing socks fell asleep faster.
A doctor on TikTok says wearing socks to bed helps you get to sleep faster, and that some of her followers have already found the hack has worked for them.
"So wearing socks makes your feet warm up and this opens up the blood vessels that cool the body down," Andrade said in the video, which has 2.6 million likes at the time of writing. "The body being cool tells the brain that it's time for bed. So actually people that wear socks tend to fall asleep faster."
"I wear socks to bed so don't come at me I'm not weird," she captioned the post.
Speaking to Insider, Andrade referenced a 2007 study at the Netherlands Institute for Neuroscience which found that those using foot-warming methods before bed - including taking foot baths and then wearing socks - fell asleep faster than those who did not.
She also referenced a more recent study in Korea in 2018 which found that participants wearing socks to bed fell asleep faster. Six males between the ages of 2 and 22 were tested; those wearing socks fell asleep seven and a half minutes sooner than those without, the study found.
"I feel like every bit of sleep counts, especially for me when I'm working so hard," she said. "So I know anything that I can do to help myself sleep, I'm always willing to try."
Andrade said the advice has divided her followers, with some reluctant to wear socks to bed, while others have reached out to her saying they've tried it and it's helped them.
Wearing socks to bed has proven to be effective, among other methods
The theory has been approved by other medical professionals, including Dr. Roxanne Prichard, a professor of psychology and neuroscience at the University of St. Thomas in Minneapolis.
Prichard, who has spent 13 years studying how college students sleep, told Insider that you can achieve the same result - opening up the blood vessels that cool the body down - using a number of other methods.
"The socks to bed - or any number of other tricks to warm up the peripheral body, but simultaneously drop the core body temperature like a hot shower followed by a cool bedroom, or a cup of hot, stimulant-free herbal tea before bed - works by accelerating the natural drop in core body temperature that helps signal 'time to sleep,'" Prichard said.
Prichard added that there is a "secondary psychological effect" of having a nighttime ritual that you believe helps you sleep.
"There's a pretty large component of placebo in our sleep rituals," she said. "So if you swear by a cup of chamomile tea and Brahms before bed, and that's your ritual, both of those signal 'time for bed' psychologically, and if you believe they do something to help you sleep, they likely will."
Read the original article on Insider