AYes, we’re not asking you to sit correctly long, but actively – it means to firmly straighten up and activate those most important inner muscles. Try doing it for 5-10 minutes right now, before starting with FitSit. Even sports professionals find it a difficult task, which confirms that sport itself cannot compensate for correct active sitting or solve the real cause of back pain problems. Most of us, however, even fail at doing sports regularly and end up spending 40+ hours just sitting.