Your social calendar might be sucking the joy out of activities that are supposed to be fun or relaxing, according to an upcoming paper co-written by a professor who studies time management. The paper argues that when a leisure activity is planned rather than spontaneous, we enjoy it less. That’s because we tend to mentally lump all our scheduled activities in the same bucket and it makes the pleasurable activities more of a chore. “It becomes a part of our to-do list,” wrote Selin A.