The Easiest and Best Core Exercise
It’s as old as the hills but still has lots of moxie
At my gym, $600 will get you a Trainer’s Package. I’m sure it’s worth it. But if core is your thing, you cannot beat the plank. This lady’s form is perfect.
Elbows under shoulders. Forearms parallel her body. Waist parallel with her legs. Feet at a 90 degree angle with legs. Her abs are tight as they’ll ever be.