HOW: Begin by having a foam roller on the ground in front of an elevated surface. Position yourself in a plank position with your forearms on the foam roller and your toes pushing into the top of the elevated surface. Flatten out your body engaging your core, shoulders, and leg muscles to maintain the plank position for as long as prescribed.
FEEL: You should feel mostly core muscles working. You will also feel your shoulder and leg muscles working as well.
COMPENSATION: Keep your back flat and your butt down in the plank position. Also think about pushing your forearms into the foam roll for shoulder stabilization and keep your gaze down.