Side Plank March 30, 2008 by Cathe Friedrich Cathe, Lorraine and Robert doing a Side Plank during STS Ab Circuits. Categories: Ab Circuits, Behind The Scenes, Blog, STSTags: Ab Circuits, cathe, exercise dvd, fitness dvd, Side Plank, STS, workout dvd Leave a Comment Related PostsNormal Weight Obesity: Can You Be of Normal Weight and Still Be Obese?February 17, 2013Deazie and Greg in the Bonus Extended StretchMay 2, 2008Cathe’s March 2011 RotationFebruary 28, 2011