 Earbuds don't tend to fit well in my ears, and as a result, they're always uncomfortable, so I don't often listen to music or podcasts while working out either. So what's left? Reading. Of course, reading an actual book on the treadmill or elliptical can be difficult, if not impossible, as the book doesn't stay put on that little tray that they provide. So I started bringing my tablet into the gym. My reading, therefore, had to be available either online or in some other electronic format.