My Gym treadmills etc have 24" touchscreens... so I bring in a USB stick with TV shows and watch them for 2 or 3 x 22 minute shows or however long I'm on there...
You forget that you're on the treadmill after a while Just set it to vary the speed every now and then, and you have to keep up if you want to see how the show ends, lol
Always made me feel guilty watching TV shows at home, thinking "I could be doing this and getting fit at the same time"