Summer sale: Save 58%

Topic: fitness trackers

Woman sleeping peacefully in bed, wearing a smart watch to track her sleep patterns. (Getty Images / whitebalance.space)

When sleep trackers make sleep worse

Elizabeth Hlavinka
Body System concept (Getty Images/zf L)

What does "heart rate variability" mean?

Anne R. Crecelius - The Conversation
(AP Photo/Mark Lennihan)

The most steps might not win

Bruce Horovitz - KFF Health News

Get this fitness tracker for just $55

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The SmartFit trainer watch is 84% off

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Save over 15% on this fitness tracker

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Get your 2019 fitness goals on track

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These sunglasses also help coach you

Salon Marketplace

A fitness tracker in a classic design

Salon Marketplace
(Getty/Justin Sullivan)

Mobile phones giving away your location

Guevara Noubir - The Conversation
The Pavlok (pavlok.com)

Wearable tech shock therapy

Andrew Leonard