Next to have proper shoes and gear, it's always good to have a fitness tracker like the BodyMedia FIT CORE Armband.
The BodyMedia FIT CORE Armband is a high-tech band that conveniently goes around the arm -- wirelessly too might I add. This device will help keep track of calories burnt, total steps taken, total physical activity time and sleepy duration and efficiency. The armband is capable of "capturing more than 5,000 data points per minute thanks to a quartet of sophisticated sensors," according to Ubergizmo. This is supposed to provide the most accurate information and it can last from four to six days on full charge.
The BodyMedia FIT CORE Armband may look small and simple, but it does everything one hopes for and more.