These are exercises to correct posture to get the body and keep the body pain free. Feel free to search on youtube “your issue” and “egoscue”. Scroll to the bottom to see a quick video about the founder Pete Egoscue as well as a link to their channel on youtube.
Here’s some for low back/ sciatic pain:
This is for the Psoas muscle:
This is for hip pain:
One for Knee pain:
Other videos of The Egoscue Method at their channel: