An exerciser includes two straps and a handle mounted to an end of each strap by an adjusting member having a movable rod movable between two positions respectively allowing and not allowing adjustment of the length of the strap. A connecting member is mounted to the other end of each strap. A stop is engaged with an end of an inelastic strap on a suspension member. A retaining ring is engaged with the other end of the inelastic strap. A plurality of rings is fixed to the inelastic strap. The retaining ring is releasably engageable with one of the rings, so that the inelastic strap forms a loop. The connecting member is releasably engaged with one of the rings. The inelastic strap is mounted around a rod or extended through a gap between a door and a door frame, allowing user to perform exercises resisting the weight of the user.