Scientists from Wayne State University warn that if you drink 2-3 cups of coffee even six hours before bedtime, you end up paying a whole hour of your sleep.. As The Daily Mail notes, drinking coffee after dinner is guaranteed to disrupt sleep patterns..

Experts tracked 12 volunteers who were given pills containing 400 milligrams of caffeine (equivalent to about 2-3 cups of coffee). For four days, people took pills 6 and 3 hours before bedtime, and another serving of pills when they had already turned off the lights.. One dose taken throughout the day was a placebo. And on one day of the study, all pills were replaced with a placebo..

Because of the caffeinated pills, volunteers toss and turn more at night, losing an hour of sleep..

That is, if you want to get enough sleep, it is better to give up coffee after 5 pm, because the stimulating effect of caffeine lasts for six hours.. Caffeine interferes with the flow of melatonin, a compound that helps you sleep.

Melatonin is secreted by the pineal gland, helping to control circadian rhythms and telling the body when to sleep and wake up. It has been previously shown that caffeinated coffee reduces melatonin concentration by 50%, shortening the duration of sleep by 1.5 hours per night..

aspekty. net.