Place the pulley at the lowest setting, or the door stop 6” above the floor, select the resistance to be used and attach the Razor to the cable or band.
Get down in the push up, or plank position with your feet against the door or machine, and your palm down.
Put a slight bend on the elbow that is not holding the Razor in order to prevent stress at the biceps tendon and to get low enough to keep your working arm, elbow to shoulder, parallel with the ground for your starting position (for a beginner, or after muscle fatigue you can hold yourself up with the forearm of the non-working arm, instead of using your hand with a slight angle).
While keeping the elbow in one spot, and pushing through the floor, start with your arm fully extended and curl until your bicep is fully contracted.
Then follow the same line going back in a controlled fashion.
One complete set is when both arms have been worked.
Repeat the movement for the recommended repetitions.