After your third week, a Factor prepared-meal subscription comes with a Withings Body Comp scale that scans your body-fat percentage. Lord help me. I will admit to being afraid of scales—the kind that ...

Enlargement of a shape or quantity is determined by its scale factor. The position of a shape is determined by where the centre of enlargement is located. The centre of enlargement can either be ...

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission. Credit: Mashable Photo ...