Okay... so, years ago when I rode, I was told I had great posture/a great seat. It's been 11 years or so, and I've done some (not lots) of reading before coming back in to riding... and it seems to me that you want to have the line heels-hips-shoulders and sit up straight and tall. No leaning forward, no chair seat, etc. Right?
And I've been feeling pretty good. But in my last lesson (which was my 3rd lesson since coming back in to riding), my instructor was telling me it's time to work on my posture - that I need to have more arch in my back and really have my shoulders back more/stick my boobs out.
I thought that in my absence the horse world had moved away from that really fake posture? No?