"Though there are dozens of oddball exercise monitors on the market that measure lactic acid buildup or quantify how high you jump, the very best fitness trackers make sense in your real life. They may sell the promise of motivation to exercise more, but they are truly useful in the sense that they give you better insight into your current lifestyle—not the one you wish you led. The new Fitbit Charge HR ($149.95) works for everyone. It measures things that universally matter to everyone's health, like steps, heart rate, and sleep. The Charge HR is nearly identical to the Fitbit Charge$109.00 at Amazon, except includes an optical heart rate monitor (HRM), which brings a whole lot more value than the $20 price difference would indicate. Both are slim, comfortable, and secure on the wrist,"
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