Influenced Activity

I listen to audiobooks when I go to the gym. I get the audiobooks from the library and I usually just choose something that sounds interesting from what's available. That means my interest level can vary widely. I realized that if I'm listening to a book that I'm not really interested in, I feel less desire to go to the gym. That occurred to me in the middle of a workout, so I stopped the book that was playing and listened to something else.