The hip hinge is a vital part of functional movement. So often our SI joints and stuck, pelvic floors too tight to allow it to move in a way that will not impact the low back. To practice this every time you sit think of reaching your hips behind you by opening your sit bones away from your tail bone. Keep you weight in your heels and when you can not hinge nay further then bend you knees. Try this when sitting down at your desk, or the kitchen table. Any time you need to sit down 🙂