Me-Time, Meditation (Part III) - SET YOUR POSTURE, RELAX AND BE COMFORTABLE
Whether you are sitting or lying down, make sure you keep your spine straight. Then, flex your muscles without changing your posture.
While there are no rules on how to arrange your arms and legs you are more comfortable by spreading them slightly and symmetrically. You will maintain your posture for a longer time by doing so. If you sit, you may put your hands on your thighs or knees.