Danica Patrick’s working on new book

Danica Patrick Instagramed Monday that she has a new book called "Pretty Intense" coming out in January 2018, more than a year away.

Patrick, who just completed her fourth season behind the wheel of the No. 10 Stewart-Haas Racing Chevrolet, is known for being a serious physical fitness buff, especially with her robust yoga routines, which she frequently posts about.

In fact, in an Instagram post after a workout earlier this year, Patrick wrote, "Some may call me pretty intense."