If you often find yourself having trouble falling sleep, you’re not alone. The American Sleep Association (ASA) says that 50 million to 70 million U.S. adults have a sleep disorder. Among that group, insomnia is the most common. The ASA says that 30% of adults have reported short-term, insomnia-like symptoms, and 10% of American adults deal with chronic insomnia.

A major study of 440,000 adults showed that 35% of us get fewer than seven hours of sleep a night. That means there are millions of people at risk of facing serious health problems that lack of sleep can cause, including obesity, heart disease, and diabetes. But it’s not just health problems these people have to deal with.

Lack of sleep is a big problem for your productivity–and for the company that employs you. A 2015 Harvard study showed the average worker loses the equivalent of 11 days of productivity every year due to sleep issues. And a 2017 study found that poor sleep cost U.S. businesses a staggering $411 billion in lost productivity every year.

The recommended amount of sleep an adult needs is between seven and nine hours each night. But for many, finding this time isn’t the problem–it’s falling asleep once your head hits the pillow. I’m one of those people who occasionally has this problem, and in the past have tried everything from meditation to medication. But for the last four weeks, I tried something different–and it’s something worth trying if you have sleep problems.

Recently, an old method used by the U.S. Army to help soldiers fall to sleep in less than ideal conditions (like battlefields) has resurfaced. The Independent says the technique was first described in a book from 1981 called Relax and Win: Championship Performance by Lloyd Bud Winter.

In the book, Winter describes the technique designed by the U.S. Army to make sure soldiers didn’t make mistakes due to grogginess. The technique apparently sends you off to sleep within two minutes.

Here’s the quick sleep technique

So four weeks ago, I tried it. The technique mainly involves muscle relaxation, breathing, and visualization tricks anyone can do. Here’s how it works: