You can find this exercise on page 272 of the book Synergistic Golf.
Exercise Type: STRENGTH
Exercise Category: LEGS - FEET, POWER PRODUCTION, RHYTHM - TIMING, STRENGTH
Stand with feet slightly wider than hips. Squat down. As you stand back up pivot on feet turning to the right and sink body down into a lunge dipping back knee down. As you push back up, turn back to front and sit down into squat again. Repeat entire sequence to the left side. Each turn Front-left-front-right is one repetition. Complete 10 repetitions.