Watching TV can be very hazardous to your health, studies have shown that people who watch TV for more than 3 hours a day can dramatically shorten their life expectancy.
My invention, Workout TV, is a stationary bike when paddled, will charge a battery, which is then connected to a TV. One hour of paddling should be enough to power the TV for 1 to 2 hours.
Most people who buy exercise machines give up after a while. It will make sure that one has to exercise before they get to watch their favourite shows, help saving the environment at the same time.