Runner's fingers starting the stopwatch on wrist

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GPS and stopwatch ready to begin at the push of a button.

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Size: 4500px × 3600px
Location: Ventura, CA USA
Photo credit: © Jon Osumi / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 2014, assessment, cardiovascular, exercise, fingers, fitness, gps, heart, heartrate, jon, measurement, monitor, motionshooter, numbers, osumi, photography, rate, runner, september, start, statistics, stock, stopwatch, time, watch, wrist