
It's a pretty thing, no....a good lift. Flexibility, strength, and focus!
Important to notice, here, look at the angle from hip to shoulder at the bottom...notice how long she holds that angle (ie, flat back)...through all 3 frames...that's "good lines"!!!
But it's also true that nothing can make you cringe, flinch, and look the other way like a bad lift!
To hurt yourself in the real world or gym, break that angle too early (like in the second frame)...that's heaving with the back...and that's a no-no.
Much of this is flexibility...in the back side and not having hip flexors that overpower the system. Also, would you say her butt is out the back? Yeah, just a bit...that's where the power will come from!
Now imagine this...add real world speed to that beautiful move...and you have a KB Swing! Read here for all the
benefit of Deadlift...KB Swing provides that + Speed! Wow...did you see all those benefits to the Deadlift...awesome stuff...it'll even lift your spirits!
Practicing this form and being mindful of your "lines" are critical...because it's the foundation for so many moves (done correctly of course). Definitely when you are lifting or swinging (form & efficiency)....but also you would hone this form, for example, coming up from a Burpee (as if she just snapped her legs in from the plank), or in a Monkey Squat, Cleans, Jumping, etc, etc.
photo from bodytribe fitness/physicalsubculture.com