As incentive to keep me cycling for full workout time, I made playlists of favorite music I enjoy while I do what ever number of minutes my workout is. If I'm doing 30 minutes, then I chose the playlist that adds up to 30 minutes...when songs are done, I'm done. Average songs are 3 minutes long, so 30 minutes = 10 songs. This is the only time I get to listen to music too, so it's a treat to listen while I peddle away. To keep from boredom, I change up the playlists every day.
Now I look forward to my stationary bike routine, actually enjoy it. I have increased my workout time as time seems to fly while listening. Every other song is more on the faster side, so I peddle faster...then drop the intensity to moderate on next song. My favorite singers are working out with me!