Abstract: Exercise apparatus includes a counting device for counting the number of push-up completed during a period of exercise and a plurality of platform elements. The counting device comprises a housing, a digital counter mounted in the housing and a button switch mounted on the top of the housing. The counter is positioned on a supporting surface beneath the chest of the person performing the push-ups and it is incremented each time a person lowers his/her chest to contact the top of the housing when doing a push-up. The platform elements are stackable one on top of another and the counting device is stackable on top of the uppermost platform element to enable the user to adjust the vertical height of the counting device above a supporting surface.