Supine Beginner/Intermediate Pull-up March 28, 2008 by Cathe Friedrich Patent Pending Brenda demonstrates a beginner/intermediate supine Pull-Up. Categories: Blog, Fitness Accessories, Push-Pull TowerTags: cathe, STS, STS Tower Leave a Comment Related PostsFeeling Sleepy During the Day? It Could Be Your DietMay 19, 2013How Hard Do You Have to Work to Maintain Muscle?January 5, 20145 Classes of Compounds in Fruits and Vegetables that Have Anti-Cancer ActivityMay 6, 2019