Badminton

When Kathleen reached sixth grade, I added exercising to her daily routine.  Exercising is a life skill that everyone can benefit from, so I used my dictatorial powers for good to help Kathleen establish this habit.  We have a treadmill, so she ran for twenty minutes every morning.  After some initial grumbling, she did admit that it made her legs stronger for horseback riding so I figured that my point had been made.  
This year Sophia started sixth grade and daily exercising.  Not having enough treadmill time for both to run in the morning, I switched their exercise time to ...