Bind a Loop Band to the door with the specific Utility Strap, taking care to fix the band at your pelvis level. Back about 1,5 meters away from the door and place a stool/chair 2,5 meters away from the door.
Starting from the upright position, lunge leaning on the stool..
8 per each side (16 total by alternating legs) x 3 sets.
Bringing the knee of your front leg beyond your toe.