Alex Effer on Instagram: "Hinges are one of my favourite ways to not only load the glutes and hamstrings, but to open the back of the hip. With that being said, most aren’t performing it correctly. I see knees that hyperextend, glutes are cued to squeeze, backs that are pulling the weight up, among others. By using constraints like the foam roller, we can really reinforce the opening of the back of the hip while loading the glute through its full range. If you want full breakdown of how to perfo