Think about the different ways you sit throughout the day- there are so many options (see below), but how many do you actually use? Katy Bowman (again!) has written loads on varying your movements and posted this image on postural habits around the world in this article.
‘When a man is narrating a story, he sits on his crossed legs … During a meal he kneels on his left knee and sits on his left heel … while inspecting anything or testing a weapon, he kneels on both knees and sits on his heels, … when he washes his hands, he squats … When it is hot, he lies down on his stomach … when he takes a nap … he turns over on his back …’
Bedouin sitting and reclining habits as described by Alois Musil (1928) in this interesting article.