You can find this exercise on page 143 of the book Synergistic Golf.
Exercise Type: STRENGTH
Exercise Category: ARMS - HANDS, SHOULDERS, STRENGTH
Using a flat bench or chair, go from a straight-arm position to having your arms bent at the elbow at a 90-degree angle, then push back up. Keep shoulders, and hips in alignment. To increase intensity, move feet farther from bench, but do not move hips away from bench. Repeat 3 sets of 15 dips.