Everyone’s heard of them – activity-trackers.  They are devices that you wear on your wrist or in your pocket or another place on your person and which monitor and track your physical activities – whether it is general movement, steps, stairs, sleep, etc.  If you want to keep a bit of an eye on what you are doing, need to lose weight or get healthier then you might want to consider an activity tracker.

fitbitAnd the Fitbit Flex is one of the most popular of the whole range of activity-trackers, and pretty good for step- and sleep-tracking.  I say ‘pretty good’ because it’s not perfect; nor should you expect any of these devices to be.  If you’re looking for high accuracy, precise step and distance tracking and exact calories burned as well as exacting standards in sleep monitoring then you won’t find it in the Flex nor will you with any device that is in it’s price range and small size.  In fact for that you’d probably need a whole host of expensive medical equipment.