Advancement in wearable devices has allowed users to easily capture and monitor their physical activity data. There is a growing interest in using the data captured by these devices for selfmanagement of chronic diseases. People with chronic conditions are encouraged by their clinicians to maintain a non-sedentary lifestyle. However, people tend to be forgetful when it comes to non-sedentary behaviours [26, 41].</a> We have developed "FitViz-Ad", a non-intrusive reminder to encourage people with Rheumatoid Arthritis to maintain a non-sedentary lifestyle. We conducted a study with fourteen healthy individuals to evaluate the feasibility of FitViz-Ad. We did not find any significant increase in participants' non-sedentary behaviour. However, the findings suggest design implications for developing reminders which encourage non-sedentary behaviour and accommodate different lifestyles.