The study's participants were given a questionnaire about their sleeping habits. Then, half of them were assigned to drink cherry juice twice a day (in the morning and at night) while the other half drank a placebo drink. After two weeks the groups switched. Those who drank cherry juice first now drank a placebo drink twice a day. Those who were drinking the placebo were given cherry juice.
Researchers found that when the adults drank cherry juice their sleep period increased by an average of 84 minutes (or an hour and 24 minutes) every single night. Getting an extra hour, sometimes hour and a half, of sleep is truly significant, especially for those who struggle with insomnia. Researchers also discovered that their sleep quality increased as well. The best part is that this occurs naturally, without the help of chemical sleep aids or medication.
Apparently, cherry juice contains compounds that stop the product of sleep-inhibiting signals in the brain, which makes it easier to drift off faster and for longer. It decreases levels of kynurenine, which is a compound found in blood that's linked to poor sleep. Cherry juice is also rich in polyphenols like procyanidins and anthocyanins—the same found in other fruits like blueberries and cranberries—which are celebrated for their anti-inflammatory properties.