Just like cable

In our effort to live healthier, my husband and I have started exercising daily.  His equipment of choice is the treadmill.  I have opted to use my new Wii Zumba game.  Today on his way downstairs to use his "Cadillac" treadmill with TV, pulse rate monitor, etc.. our nine-year-old daughter followed close behind giving him a suggestion for a better workout.  Her advice:

You and Mom should work out at the same time.  You wouldn't have to watch the TV on your treadmill, 'cause watching Mom work out is like watching cable...comedy show!

Where did I go wrong?