This Overhead Shoulder Flexibility program is unlike anything you have ever seen or tried before. Here's why... https://www.easyflexibility.com/products/ebook-complete-shoulder-flexion Shoulder extension, which is, bringing your arm straight down from overhead position, is one of the most powerful upper body moves that can be made with your arm. This is great! But also very problematic. The reason its problematic, when it comes to stretching, is that many large muscles participate in this simple