Your fitness goals will determine the workout duration on the bike. For seniors and anyone looking for a low-intensity workout, 30 minutes daily on the recumbent exercise bike will provide adequate cardio to maintain health. On the other hand, if your goal is weight loss or to improve your overall fitness level and cycling performance, 60 - 90 minutes for five days a week can deliver the results you are targeting. However, always exercise within your limits to prevent injuries and muscle fatigue.