Is "Butt Wink" really such a problem?
Author: A very common topic that is discussed a lot in the gym is the so-called Butt Wink - What is it? In a nutshell, it's the phenomenon where your pelvis flips backwards at the bottom of the squat and your lower back arches. And in this short article, world-renowned physiotherapist and fitness coach DR. Aaron Horsching will try to explain just how dangerous that "Butt Wink" is.
"How dangerous is 'Butt Wink'? How ever - let me explain.
Research shows that our spine can take a staggering amount of strain if it is in a relatively neutral position. The aforementioned 'butt wink' is the backward rotation of the pelvis at the bottom of the squat that pulls the lower back from neutral into flexion.
If this is committed by someone with no history of pain behind and during a deep squat with their own weight, where the load on the spine is minimal, it may be perfectly fine.
However, if someone performs this movement repetitively and with a weight on their back, the winking puts stress on the lumbar spine, a mechanism that is known to lead to bulging intervertebral discs. If enough force is applied, it can lead to injury. So this movement should be avoided as much as possible."
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