Play as exercise

I have been trying to find time to exercise and train for the Warrior Dash (a 3.5 mile obstacle course).  I have been unsuccessful thus far.  Its hard enough to find time to do something that I enjoy let alone something that I find boring and tedious like working out.  I didn't work out today.  Instead I jumped rope and hula hooped.  I also did a little zumba and played backup dancer to my nephews' singing on the Xbox.  I got sweaty and my calves are feeling sore.  So no, I didn't work out, but I did get some exercise.  What did I take away from this experience?  I learned that even college students need recesses and that playing with my son and nephews is a much funner alternative to working out at a gym.