Bought these because they do your BMI etc and had my other scales for a while, thought I'd set them up this morning and weigh myself, gutted...they weigh me approx 6lbs heavier than my usual scales, so now instead of putting on approx 6-7 lbs over Christmas, I now weigh nearly a stone heavier than I first thought!! Just been to the shops and bought some more fruit and will definitely not be having a treat takeaway tonight :(