Set-up: Find a graspable, immovable object at a height that will allow for proper execution of the exercise. A barbell locked in place, a sturdy desk or a high chair may all suffice - simply make sure it is immovable and unbreakable, to bear your weight without incident. Keep your legs together and feet on the floor, and grasp the object with both hands, such that a line forms between the shoulders, the elbows and the apparatus.
Lift: Pull yourself up - without sagging the hips or rounding the lower back - until your chest touches the apparatus. Squeeze the shoulder blades together at the top of the movement.