Netflix says it’s cracked the code on how fast or slow different genres of television get binge-watched on the streaming service, and the fastest category is “thrillers.”

Netflix does not release data on its viewership, but in an internal study of 100 shows, the streaming service said it found that shows in the thriller, horror and sci-fi categories lend themselves toward more intensive bingeing. Shows in this category, like Breaking Bad, The Walking Dead and Orphan Black, are more likely to be viewed for 2 hours and 30 minutes per day, with seasons being finished in about four days, the New York Times reports.

On the opposite end of the spectrum, irreverent comedies, political dramas and historical dramas were more likely to be seen in smaller doses of just 1 hour and 45 minutes per day, with seasons being finished in about six days. Shows in these categories include Unbreakable Kimmy Schmidt, House of Cards and Mad Men.

Categories that fall in the middle of the spectrum include dramatic comedies (like Orange Is the New Black), crime dramas (like Fargo) and superhero dramas (like Netflix’s original Marvel series).

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