This has to be one of the most repeated pieces of advice with regards to posture, and one of my biggest bugbears. Essentially it's unhelpful and doesn't work, and you'll know it doesn't if you've ever tried it. Seriously, why go to all that physical effort to solve a problem of too much physical effort?!
Why not give the Alexander Technique a try with a half price consultation?
If you have any questions about how the Alexander Technique could help you, please do get in touch, I'm happy to answer any queries you may have.