pimg class=”alignright” src=”http://i247.photobucket.com/albums/gg158/MDA2008/MDA%202012/heartrate.jpg” alt=”heartrate” width=”320″ height=”238″ title=”Have You Checked Your Heart Rate Variability Lately?” /People are always looking for that one biomarker to rule them all, the number on a paper that absolutely determines your health, longevity, fitness level, sex appeal, happiness, and productivity. Throughout the years, it#8217;s bounced around as researchers think they#8217;ve found #8220;IT#8221; #8211; from cholesterol to LDL to BMI to small dense LDL to CRP to blood pressure to pulse rate and back again #8211; but we always come up wanting. The #8220;one biomarker#8221; never pans out because biology is complex and irreducible to a single number./p
pHowever, there is one biomarker showing promise as a broad indicator of overall health and fitness: heart rate variability (HRV), or the variation in the intervals between heart beats. If your heart beats like a metronome, with intervals of identical length between each pulse, you have low heart rate variability; this is […]

Original post by Mark Sisson

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Filed under: Fitness