Heart rate variablity

<span class="attachment-meta">Published on <time class="entry-date" datetime="2017-07-12T05:29:40+05:00">July 12, 2017</time> in <a href="https://www.solefit.ca/health/matching-exercise-intensity-health-goals/" title="Return to Matching Exercise Intensity with Health Goals" rel="gallery">Matching Exercise Intensity with Health Goals</a></span>Full resolution (540 × 405)