There are times when knowing the size of your waist can be useful. Waist size is one of the most crucial measurements when it comes to buying clothes or having them fitted. The circumference of your waist is also an important indicator of health, and monitoring changes in your waist size will help you mark diet and exercise progress. The most accurate way to measure your waist is by using a measuring tape, but if you do not have one, you can estimate.
Stand up and move any clothing or other impediments out of the way of your waist, which is located in the space between your bottom rib and hip bone.
Estimate the circumference. Take a piece of string and hold one end of it against your stomach with your left hand. Wrap the string around your waist and with the fingers of your right hand, mark the place where the string meets.
Measure the string. Remove the string from around your waist and lay it on a table. Using a ruler, measure the distance from the end of the string to the place you marked. This will be the approximate circumference of your waist.
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