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Four studies test the accuracy of VO2 max estimates in advanced watches.

The Best Heart Rate Monitors for Runners The Editors © Staff For heart rate training or simply keeping an eye on your BPM, these devices don’t miss a beat. We’ve all had those runs where we glance at our watches in utter disbelief. How is it that yesterday’s tempo felt effortless, but today’s recovery run is two minutes slower per mile and feels ten times as grueling? Turns out, your pace doesn’t always indicate how hard you’re working on a run, and that’s why it can help to rely more on heart rate to measure effort and intensity. Some runners track heart rate...

Right now it appears that one contributing factor may be speed. but that is part of an active ongoing investigation. when we have more about that, we'll let you know. >> the police chief says a war rapt has been issued to get a video and information box from the bus. federal traffic investigators are expected on the scene this morning. in marathon, new york, a chartered school bus taking students from ro chest tore new york city crashed and overturned along an icy upstate highway. police say the crash happened yesterday morning when the driver swerved to avoid two other vehicles that veered ...

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