Doctor Josh Hanson (@doctorhanson) shared his nifty little 'sleep hack' on TikTok, telling users in the caption: "Can't sleep? Try this!"
In a video, Hanson guides people to an area located behind the ear known as the 'anmian', which should be rubbed between 100 and 200 times to help relax the nervous system.
Hanson, who is a doctor of acupuncture based in Tampa, Florida, says in the clip: "If you're having trouble sleeping, you want to rub the spot right here - it's called 'anmian'. Anmian means peaceful sleep.
"What you want to do is come to your ear, slide your finger back. You're going to find a little ridge, a little notch right here. It's going to be tender and sore.
"Rub in a circular motion 100-200 times, and that's going to help relax your nervous system, calm things down and make sleep easier."
The video has been viewed 9.8 million times and has more than 870,000 likes.
The post also has 10,000 comments, with many writing to say they'd give it a go.
"Ima try this cause I have sleeping problems," one said.
Others didn't seem so convinced, saying the thought of rubbing the spot up to 200 times put them off.
"I can barely count to 10 sheep before I get bored and accept defeat and you want me to go to 100-200?" someone wrote sassily.
"Are you mad? You lost me at 200 times," another added.
But others commented to say that the method had worked wonders for them, with one person saying: "No joke, I just woke up from doing this and I came back to let y'all know how physically relieved I feel. Do it. It's worth it."
Others just said it felt 'so good' whether it was successful or not.
NHS advice for insomnia - a condition that means you regularly have problems sleeping - includes going to bed and waking up at the same time every day, relaxing for at least one hour before bed, making sure your bedroom is dark and quiet, exercising regularly during the day, and making sure your mattress, pillows and covers are comfortable.
In terms of what not to do, the NHS says don't smoke or drink alcohol, tea or coffee at least six hours before going to bed, don't eat a big meal late at night, don't exercise at least four hours before bed, don't watch TV or use devices just before bed, don't nap during the day, don't drive when feeling sleepy and don't sleep in after a bad night's sleep.