Stand up straight..
Improve your posture – There was some truth behind your mama’s words when she asked you stand up straight. However, as rebellious children we would take those words to the extreme and stand up like rigid soldiers.
What she really meant was to roll your shoulders back to enhance your posture. It is important to keep your spine as straight as possible, so that your muscles are not straining or contracting unnecessarily.
Keeping your nerves unhindered and your spine straight, energy is allowed to circulate freely throughout the body. As odd as that sounds it is truly necessary for you to keep your spine straight.
Instead of standing like a soldier, roll your shoulders back and imagine a string attached to the top of your head. When the imaginary string is pulled up, your spine is straightened, your shoulders are comfortably in a rolled back position, your chin is level with the ground and your entire body will thank you.