By RealJock Staff

This exercise provided courtesy of Billy Polson, founder and co-owner of DIAKADI Body training gym, voted best personal training gym in San Francisco by CitySearch in 2006.

Benefits
This powerful combo exercise focuses on the legs and shoulders, but trains the entire body. You'll develop core strength and power as you squat and jump with dumbbells in your hands, then work your shoulders with shoulder presses at the end of the move.

Muscles Worked
Full body

Starting Position
Stand upright with legs a little more than shoulder-width apart. Hold dumbbells in each hand; your arms should be at your sides and your palms facing inward, with your thumbs forward (see Photo 1).

Exercise

1. From the starting position, bend your knees and lower yourself into a fully squatted position, with the dumbbells in your hands resting on the floor between your feet. Keep your back flat, and do not change the inward-facing orientation of your palms from the starting position (see Photo 2).
2. From the squatted position, immediately kick your feet back into the plank position in one fluid motion. Your shoulder blades should be flat; do not round your upper back (see Photos 3 and 4).
3. After pausing for only a moment in the plank position, lift up your feet and shoot them back towards your hands, landing them back at the squatted position (see Photo 5).
4. Stand up from the squat and lift the dumbbells to your shoulders, then press both dumbbells above your head in a shoulder press, with your palms facing inward (see Photo 6).
5. From the top of the shoulder press, lower the dumbbells back to the starting position. Repeat the exercise 12 times for a full set.

About Billy Polson: Billy Polson is the founder and co-owner of DIAKADI Body training gym, which was voted the best personal training gym in San Francisco by CitySearch in 2006. A competitive swimmer and triathlete in his own right, Polson has over 15 years of experience working as a coach and trainer, and was recently named by Men's Journal Magazine (December 2005) as one of the Top 100 Trainers in America.