The best way to measure your feet for running shoes is by heading to the shoe store and getting fitted by an expert. But if you need to troubleshoot sizing on your own, all you need is a ruler, paper, ...

Fitbit trackers are known for their at-a-glance step-tracking abilities, but have you wondered about how many Fitbit steps are in a mile? Here's what you need to know about the way Fitbit calculates ...