The back squat requires the structures of the lower body and core to work synergistically. Optimal performance requires an adequate range of motion at the ankles, hips, and knees; superior lower-body strength; and a tremendous amount of core stability.
Comments on The Back Squat
Might be the difference between a high bar vs. low bar squat. In the video, this is a high bar squat which lends the torso to stay vertical....I much prefer the low bar squat myself when getting heavier, which utilizes more hip drive.
Check out this site below for more in depth insights between the two.
https://barbend.com/high-bar-versus-low-bar-squats/
I don't know how he keeps his torso so vertical. I think I'm way further forward when I don bs, esp. heavier ones.
The Back Squat
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