@tim You are not controversial! my silly toot came about because last night I said - 'my hip-butt' is sore... Long story short, I realised I sit funny and get really unbalanced, and for me much of the bendy stuff is easier (was a child gymnast), and a few good stretches and evening out means that I can undo a day's damage (I should really figure it out and break the habit of sitting oddly)
The mind is definitely my challenge.