Desk-ercise – Lunges (Reversed with a Twist)

The reverse lunge and twist is a calisthenics, pilates, and stretching exercise that primarily targets the quadriceps and to a lesser degree [also targets] the abs, hip flexors, etc.
Step 1: Stand tall with arms at sides.
Step 2: Begin exercise by stepping back with left foot while raising your left hand up so palm is facing forward and elbow is bent at a 90-degree angle.
Step 3: Now begin to lower into lunge and simultaneously twist your torso to the right (always twist to the side with the leg that is forward). Pause, then reverse movements back to starting position.