athletics, bryan lockley, fitness, florida, gym teacher, NYT, physical fitness, sports, training

Activity Trackers Get Smarter at Measuring Fitness by REUTERS


By REUTERS

Fitness activity trackers have come a long way since Leonardo da Vinci sketched a rudimentary gear-and-pendulum pedometer to track the treks of 15th century Roman soldiers.

Published: December 21, 2014 at 11:12PM

from NYT Technology http://ift.tt/1znJ7Ty

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