Instructions
With two dumbbells side-by-side on the floor, grasp hold of them and set yourself up in a high plank position. Bracing your core, rotate your body by pivoting your feet and extend one of your arms straight up above you so that your body creates a letter "T". Return to the starting position and repeat on the other side. Repeat for the desired number of repetitions.
Tips
As you are raising the dumbbell up above you, keep the weight close to your body.