Inches??

I have a question regarding inches. No, not those inches, sillies. When touting weight loss, programs will state that person X lost Y inches in Z days. How many measurements go into this accumulative total? Where are the measuring points for such? Is it just another way of talking around actual pounds? Nowhere Man/PH/Jay

ALGEBRA AND GEONMMATRY HAS NEVER BEEN ONE OF MY STRONG POINTS..SO IM JUST AS CONFUSED AS YOU joann