I really dislike riding indoors. I do it sometimes in the winter type months. However, 2017,18 I did it quite a bit. I was doing intervals 3 days a week, and longer 90 rpm type rides a couple of days a week. That spring when I started outdoors I was in the best biking shape I had been in quite awhile. I have tried music, reading, dvd's but intervals was the best way to break up the boredom.