There is a correct way to stand; having a correct posture you may say. The purpose of this is that the human body can be erect with the minimal amount of muscle effort. Viewed from the front the body should of course be symmetrical. And there is hardly anyone that would not know that. How about when we view it from the side?
If you look at a person from the side, the most effective way to stand and having correct posture is when these landmarks of the body are aligned:
- Collar bone
- Hip joint
- Knee joint
- Ankle joint (front end)
This would define good correct posture and is easily maintained by minimal muscle effort provided by small postural adjustments, mainly by the extensors of the back and calf muscles of the ankle. This is because the ligaments of the hip and knee are being tightly stretched to provide passive support.
When you are standing upright in good symmetry your center of gravity should align between your feet as is illustrated in the image.
How many of your friends and relatives deviate away from proper posture?