The main character has a year of rest and relaxation - by bingeing on pills that let her sleep for days at a time, only waking up to eat and watch TV.
Looking at the Goodreads reviews, it seems like this book is one you either love or hate, depending on whether you have sympathy for the main character or not. She's kind of a terrible person but at the same time I enjoyed her as a character. I'm not about to binge on pills but I can sort of relate - sometimes I just want to play videos games alone all day and not have to think about doing anything else (definitely not for an entire year though!).