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 ...

Key points Check your understanding Enlarging with a negative scale factor Multiply these displacements by the scale factor. Using these values, count in the opposite direction from the centre of ...

TL;DR: As of Jan. 1, Mashable readers can score 50% off their first box at Factor, plus get a free Withings scale with their ...