The Sit-up Board is a lighter, narrower category of outdoor exercise equipment from Meerut Gym and Gymnastic Works. It is geared for school-aged children and young adults, but anybody looking for these specifications will use it. The exercises on this Marino product increase the strength of the abdominal muscles as well as the flex or community of hip and upper thigh muscles. Your whole core muscle community gets a workout at the Sit-up stop. On the Sit-up, there are two positions: one with the feet down and the other with the feet up and placed under the support frame.