Bonjour,
You know that I am a "posture tragic".. Like a cricket tragic, but much more interesting. At the beginning of 2020, I was trained in the Gokhale method. My sister-in-law just showed me some Alexander Technique postures and poses. It is very similar.
Here is a link to a short video featuring Esther Gokhale, herself.
I can recommend the training. It is thorough and interesting. If you are interested, let me know and I will forward information about training dates in 2022.
Meanwhile, she has also given a TED talk. It is well worth a watch. Here is the link:-
Habit of the Week
Sit at the front of a dining chair in a stack sit pose.