Action-packed TV shows such as HBO’s Game of Thrones and CW’s Arrow may soon come under fire for making their dedicated fanbases overeat while tuning in. A Cornell University study has found that viewers mindlessly snack more while watching fast-paced television than while viewing more leisurely-paced shows.

Cornell researchers observed the snacking habits of 100 undergraduates as they watched one of three 20-minute sessions of television. Participants either watched Michael Bay’s 2005 sci-fi thriller The Island starring Scarlett Johansson and Ewan McGregor with sound, without sound or watched the Charlie Rose public television interview talk show. The students were all provided with a banquet of cookies, M&M’s, carrots and grapes to consume while watching.

When watching The Island, students ate about 7 ounces of various snack foods, and 354 calories in total. They ate 140 calories less and nearly half the ounces of junk food when watching Charlie Rose. Even when they watching The Island without sound, they ate almost 100 calories more than they did with Charlie Rose. The study’s lead author Dr. Aner Tal concluded that the faster paced TV seemed to distract viewers more, which led to mindlessness eating.

“More stimulating programs that are fast paced, include many camera cuts, really draw you in and distract you from what you are eating,” said Tal. “They can make you eat more because you’re paying less attention to how much you are putting in your mouth.”

According to Tal,  constantly watching action TV could increase a viewer’s risk for overeating and obesity, so viewers should hide or avoid their available supply of high-calorie snacks when watching TV to avoid mindless eating.

Previous studies have shown that cooking shows attract more unhealthy eating than nature programs, and other research has suggested that watching any sort of good television increases the appetite.