An
exercise machine for performing both a hack
squat exercise and a
leg press exercise is disclosed. A hack
squat platform is operably mounted to a frame for use in performing a hack
squat exercise. A collapsible seat is operably connected to either the frame or the hack squat platform for use in performing a
leg press exercise. The collapsible seat and the hack squat platform are provided as alternative configurations whereby only one of either the collapsible seat or the hack squat platform can be used by the user at one time.