10. Dolphin Plank
This one is all about forearm balance and it’s pretty advanced. Dolphin Planks start out on hands and knees. Slowly, using your abdominal muscles to keep off the mat, lower your elbows till the forearms are flat on the floor. Then walk your toes back till legs are extended and the body is straight.  It’s not easy but, it’s a really effective way of flattening those abs.

11. Scissor Plank
On your hands and knees, balance your weight on the left arm and raise your right straight out in front. Now lift your left leg and raise it out and back till it’s straight using your right leg for balance. Switch sides.

Editor’s Note: This article is one in a series of Colgate sponsored posts centered on total health and wellness.