A new survey found that the more coffee college students drink, the lower their GPA becomes.
Best Mattress Brand surveyed more than 1,000 U.S. college students to determine how their sleep and energy habits affect their GPAs. The researchers found that students who drank one cup of coffee a day had an average GPA of 3.41, while students who drank two cups a day came in at 3.39. Those who drank five or more cups of coffee per day had an average GPA of 3.28.
Jeffrey Ellenbogen, assistant professor of neurology and sleep medicine at Johns Hopkins University, told USA Today that other factors, like sleep deprivation, play a huge role in students' performance.
"If one is a daily consumer of caffeine or feels like they can’t function without it, that’s a time to take a big step back and look at what is the quality of sleep and quantity of sleep," Ellenbogen said.
He said regular coffee drinkers are usually "sleep deficient, an indicator of cognitive impairment."
"If a college student is drinking four or five cups of coffee a day, they are probably going to need help from some sort of health care provider," Ellenbogen said. "Those people are really depending on coffee. They aren’t just masking over the sleepiness."
Ellenbogen suggests students stop drinking coffee in the evening because those drinks will most likely disrupt their sleeping cycle.