"posture" is cultural. "Military" posture (squeezing shoulderblades back) looks like good "posture" but is bad for the shoulder gurdle. Standing with hip cocked to one side, or standing with feet very close together (cultural, for women, but NOT good alignment). Better alignment means better lymphatic flow

Katysays.com (search on ALL kinds of topics)

restorativeexercise.com

Alignment Matters, by Katy Bowman

A Woman's Guide to Foot Pain Relief by Katy Bowman (fix your FEET, fix your whole body alignment, NO KIDDING)

A great shoe list which is the foundation of good whole body alignment:

https://nwfootankle.com/resources/111-Shoe%20List

Facebook group:

All About Alignment

https://www.facebook.com/groups/693884783956563/