So I am afraid I don’t do a lot of exercise which is not good. We all need to do a bit more of that I guess. One of the things that I do love though is stories. This app which is free is an example of what can be done with story. I will say though that if a younger person is going to be using it, then having an adult/parent look first might be good. Just to gauge if it is age appropriate:
The Story Shed 