The Importance of walking with a straight posture, or just standing straight
The correct way to stand or walk is pulling your shoulder blades back a little bit and pull the head back just a little bit. Stand as tall as you can. Then just walk facing forward.
Walking and standing in the wrong way, in the long term will cause you to have back problems
Read an article of a study by Dr. Bruce Landon from the Harvard Medical School showing that many doctors today are ignoring back pain self care guidelines and are instead sending patients through unnecessary tests and addictive narcotic treatments.