The context of the following conversation is Tracy asks Sydney to lead their group story next week. It's a huge honor and Sydney is ready to prepare.:
Sydney says Tracy asked me to lead our group story next week.  I feel so honored..
The friend responds What group is it?.
Sydney responds I am in this book club where we read a book every week and then come together and discuss it..
The friend responds That sounds time consuming..
Sydney responds It could be tough to get through a book a week, especially if it's a thick book.  It keeps my mind sharp so I like the group..
The friend responds You are always such a bookworm..