Millions of us spend endless hours scrolling through our news feeds on Facebook, only to do the same thing again five minutes later.
So why do we waste so many hours on the popular social media platform? Scientists believe they have the answer.
According to new research, going on your Facebook timeline makes you feel good, even if it doesn't seem that way.
Even brief exposure to a Facebook-related image (a logo or screenshot) can cause a pleasurable response in frequent social media users, which might trigger social media cravings.
Michigan State University's Allison Eden said: "People are learning this reward feeling when they get to Facebook.