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Plus, it can bemotivating ashellto see your sweat in the numbers.

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Compassionate Eye Foundation / Getty Images

It’s important to include a few days of lower-intensity exercise too, like steady-state cardio orweight training.

Then, subtract that from 208.

In this case, your max heart rate would be about 190 BPM, or beats per minute.

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Garmin Forerunner 15 Heart-Rate Monitor, $150,garmin.com

Now that you have that number, you might use it to find your intensity zones.

Thatd be between about 133 BPM and 162 BPM if your MHR is 190.

Its all about what you feel comfortable wearing.

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Polar FT4 Heart-Rate Monitor, $100,polar.com

Figure out what stats you need.

This chest strap and watch model is swimming-friendly (which also means it’s sweat-friendlyamust).

Instead of connecting to a watch, this monitor shows your heart rate on a mobile app.

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Wahoo TICKR X Heart-Rate Monitor, $100,amazon.com

The Blaze is geared more towards heart-rate tracking than the rest of the Fitbit fam.

You may also like:A simple fat-burning workout you’re free to do at home:

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TomTom GPS Multi-Sport Watch, $250,tomtom.com

MyZone MZ3 150 myzone.org

MyZone MZ-3, $150,myzone.org

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Fitbit Blaze, $200,fitbit.com