Sacred Haven of Debauchery

By "benefit," I mean not reading the literature assigned for the summer, but rather direct benefits in a logical, biological, and healthy sense – activities that you choose for yourself, that you find interesting, and that bring you pleasure. If you're not stupid, you'll grow into a well-rounded person anyway; solving equations and reading a stack of 20th-century works isn't necessary for that. And you won't lose your mind by looking at the calendar and seeing that three months have passed since the last time you looked at the calendar.

And if you watch anime every day, then no day will be useless, and such thoughts won't arise.

In a nutshell.