Abstract: Disclosed is a portable exercise device for enabling a user to perform sit-up exercises. Also disclosed is a portable exercise system that comprises the portable exercise device, and a mat for supporting a back portion of the user while performing the sit-up exercises. The portable exercise device comprises a base member having a pair of base portions foldably coupled to each other and a pair of pedal portions configured on the pair base portions, a pair of strap members coupled to the pair of pedal portions, a pair of support members removably coupled at end portions of the pair of pedal portions, and a counting unit movably mounted on the base member. The counting unit comprises a timer adapted to determine a period of the sit-up exercises, at least one pressure, and a counter operatively coupled to the at one pressure sensor to determine a number of the sit-up exercises.

Abstract: Disclosed is a portable exercise device for enabling a user to perform sit-up exercises. Also disclosed is a portable exercise system that comprises the portable exercise device, and a mat for supporting a back portion of the user while performing the sit-up exercises. The portable exercise device comprises a base member having a pair of base portions foldably coupled to each other and a pair of pedal portions configured on the pair base portions, a pair of strap members coupled to the pair of pedal portions, a pair of support members removably coupled at end portions of the pair of pedal portions, and a counting unit movably mounted on the base member. The counting unit comprises a timer adapted to determine a period of the sit-up exercises, at least one pressure, and a counter operatively coupled to the at one pressure sensor to determine a number of the sit-up exercises.