Check out when K1 went swimming as part of their unit on movement. They wanted to find out more about what exercise was.
You can read about it here:
http://k1ac.weebly.com/10/post/2014/02/what-is-exercise-an-investigation.html
You can read about it here:
http://k1ac.weebly.com/10/post/2014/02/what-is-exercise-an-investigation.html