I read a thread on here a few weeks ago about how if you have a waist measurement of 31+ inches you need to lose weight and are unhealthy, regardless of your BMI. I've since been quite concerned about my measurement and been taking it a few times a week. I cannot, however, work out how to do it right! I don't think I have a 'normal' stance, but the difference between me taking the measurement standing up straight like I would for a photo or something (not sucking in, but shoulders back, back straight etc) and letting it all hang out is huge- 28 inches for the former and 32 inches for the latter. Anyone else a bit confused about how to 'be' for this measurement? My BMI is 21.5 and I wear a size 10, if it makes a difference, but I have an ED history and am a bit concerned about being unhealthy.