Rhona-Mae Arca March 16, 2013 Health & Wellness, Recommendations & Reviews Product Review: FitBall Seating Disc Rhona-Mae Arca March 16, 2013 Health & Wellness, Recommendations & Reviews The average person sits 56 hours a week, leading to sitting fatigue, chronic pain and poor posture. Wiggle your way to better health with the FitBall Seating Disc.