My mom and her mom have always said that looking good is all about your posture. Growing up, it is easy to take what your elders say for granted. I never took to heart what they were trying to tell me. First of all if you stand up straight with your body well aligned you may prevent some types of movement dysfunction. Shoulders back, head high, ribs in, legs tight. I now find myself talking about posture all day. Not only is it better function to stand up straight it may also give you more confidence (or the appearance of being confident) and it may make you look a little leaner. Whatever your motivation good posture is important.
Four rounds for time of:
Run 400 meters