If you’ve ever felt low back pain after squatting, you might be dealing with a common yet overlooked issue: the butt wink. This subtle movement—when your lower back rounds at the bottom of a squat—can cause unnecessary strain on your lumbar spine and surrounding muscles.

Here we explain what a butt wink is and why it can lead to discomfort or even injury over time. The good news? It’s usually caused by limited ankle mobility and is surprisingly easy to correct with a few simple tweaks.

In today’s video, we are sharing a quick tip you can use immediately at the gym to start squatting deeper, safer, and without that dreaded low back pain. This isn’t just about comfort—it’s about helping your body move better and train smarter while avoiding injury.

Dr. John McNeely

Dr. John McNeely

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