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 PostsPlie Squat with a Heavy DumbbellFebruary 10, 20086 Mental Hacks That Make It Easier to Stick to Working OutDecember 20, 20205 Myths about Calcium – DebunkedSeptember 27, 2015