Recovery
Stretching and mobility: what each actually does
Flexibility and mobility are not the same thing, static and dynamic stretching do different jobs, and most of what is claimed for both is not supported.
Topic
mobility
Every Entire Strength article tagged mobility — 2 pieces across 2 sections.
Technique
The squat depth argument, settled as far as it can be
Depth is treated as a moral question in most gyms. It is actually a question about what you are training for, what your hips are shaped like, and whether you can maintain position.