Plank with Triceps Kickback is December's Exercise of the Month
Master trainer Sheri Branson notes that this combo exercise is a nice twist on both the classic plank and triceps kickback. 
1. To complete the exercise, start in a hand plank position with grounded hand just inside your shoulder.
2. Staying in a neutral plank position, lift the dumbbell while locking your upper arm to the outside of your rib cage.
3. Then kick the dumbbell back until your working arm is straight.
You will be moving from the elbow, not the shoulder.
Complete 8-15 reps on each side.
Notes:
- Your obliques should be firing to keep you from rolling to one side
- Keep your shoulder and upper arm immobile throughout the kickback
Sheri's Expert Trainer tip:
Keep shoulders squared off to floor by tightening your glutes and your abs.
