Fitbit’s One wireless tracker not only keeps count of your steps, distance walked, calories burned, and stairs climbed, but it also monitors your sleep patterns. The device syncs with your PC, smart phone, and ipad and allows you to upload goals and updates such as what you ate over the course of the day. The One clips onto your clothing, but you can also keep it in a shirt or pant pocket for similarly accurate counts. ($99 onFitbit’s site)