When it comes to exercising, your heart rate is the gold-standard metric to uncover how hard you're pushing. It tells you whether you're working aerobically or anaerobically, how your body is reacting ...
"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." Heartbeat monitors have been around for decades. Polar introduced the first wireless wearable ...
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you are an athlete in training or simply keeping tabs on your vitals, measuring your heart rate is a ...
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