Me: Your elbows need to be under the bar. Keep the chest out and
drive the elbows forward as you rise out of the hole.
Internet Acquaintance: Under the bar? I thought the cue was elbows up! isn't elbows under the bar referring to a High-bar squat?
Me: I can only guess what you mean by "elbows back and up", and if you're like most people who I've seen doing this (and like the pic above), you are cranking the elbows skyward behind you, internally rotating the crap out of your shoulders, and making it a lot harder to maintain proper thoracic spine extension. If so, watch my video again, then reread Rip's chapter on the squat, paying closer attention to elbow positioning in the pictures.