Attach a pair of resistance bands to a door anchor. Place the door anchor on a door and adjust the height. Attach handles to the other end of the resistance band. Do the same for a pair of resistance bands. Grab handles with overhand grip. Lie supine on floor and raise your hands above body.
Elevate your upper body until your body is vertical to the floor, lower your upper body back down to the starting position and repeat.
Lie down on the floor placing your feet either under something that will not move or by having a partner hold them.