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 PostsMy Journey with Cathe by SherryOctober 13, 2013Plank Progressions: How to Advance Your PlanksAugust 30, 2020Is Your Brain Sabotaging Your Workouts?July 10, 2016