HOW TO CHECK YOUR POSTURE
If your posture is poor, it probably feels normal, and you may not be able to spot what needs to be corrected. Getting an objective view will raise your awareness of your body position. A fitness trainer can check it. Or, ask a friend to take a photo or video of your head-to-toe profile while you stand, relaxed, arms at your sides, looking straight ahead. There should be a straight line from the center of your feet, up through your knees, hips, and shoulders, to a point just behind your lower ear, where you can feel the edge of your skull. Your feet should be pointing straight ahead, with the weight evenly distributed. Rhodes suggests envisioning each foot being a tripod, with the three points being the big toe, baby toe, and heel.