asked 58.7k views
2 votes
Which technology keeps track of heart rate during a workout?

2 Answers

3 votes
cardio workout app on cell phones and ipods
answered
User Salmanbw
by
8.6k points
5 votes
if you are talking about what used this you can say smart watches, doctors and smart phones
answered
User Fauzi Danartha
by
7.9k points

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