If you’ve been sleeping on TikTok trends, you might not realize that across the internet, millions of people are stocking up on supplements like magnesium, eating kiwis before bed, or taping their mouths shut—all in pursuit of better sleep.

“Sleepmaxxing,” as the trend is called, is an umbrella term coined by social-media users to describe hacks that can maximize or improve sleep quality and quantity. “You can sort of think of it as a modified or upgraded version of sleep hygiene,” says Dr. Sam Kashani, a sleep medicine specialist and assistant clinical professor at the David Geffen School of Medicine at UCLA.

Is it useful—or just another waste of time and money? “I think it’s a positive thing that people want to take measures to optimize their sleep,” he says. “But there’s a fine line between ‘healthy’ sleepmaxxing and being somewhat obsessive and hyper-fixated on sleep.”

Here’s what experts want people to know about the trend—including the point at which it goes too far.

What are the most popular sleepmaxxing strategies?
There’s no single way to practice sleepmaxxing. Rather, people combine the products, techniques, and strategies that work for them. Among the options:

Taking magnesium and melatonin supplements
Avoiding liquids for two hours before bed
Using a white-noise machine
Mouth-taping
Eating a kiwi before going to sleep
Using a weighted blanket or cooling pillow
Lowering bedroom temperature
Wearing a sleep mask
Showering one hour before bed
Meditating
Not setting an alarm clock