If you buy a couch to sit on and watch TV, there's nothing wrong with that. You might even see a sports program on TV that motivates you to go jogging. Just don't buy the couch in order to further your goal of physical fitness. Or claim that couch-buyers are a community of people committed to becoming more fit, because they sometimes watch sports shows and sometimes get outside.

Couch-buyers are a community of people who sit around - even if they watch sports programs. Real runners buy jogging shoes, sweat headbands, GPS route trackers, pedometers, stopwatches...