I may be a bit of a pushup fanatic. They are a great workout. Yesterday I did 60 minutes of pushups and situps while listening to some online training to pass the time. As a fitness fanatic, I always encourage people to find what makes it work for them.
Count challenges, time, friends, weight goals, and so forth all work well for different people.
The listening/watching instructional materials as part of my workout the last three weeks has added
about 15 minutes to my average workout time and that is a big benefit.
-mS