Featured in heart rates
Measure your heart rate with your phone—stat
No smartwatch or tracker required.
The Apple Watch is evolving into a legitimate medical device
The smartwatch's new ECG function brings fitness trackers into real medical care.
The 7 Most Important Fitness Tracker Measurements
How they work and what healthy data looks like
Check Your “Fitness Age” With This Research-Based Calculator
It's based on the suffering of 4,637 Norwegian men and women aged 20 to 90.
Measure Your Heart Rate Using Headphones
It works with pretty much any cheap pair of earbuds.
This Guy Mapped His Heart Rate During ‘Game Of Thrones’ [Infographic]
Vertigo-inducing peaks and valley during the "red wedding" scene? Yep. Looks about right.
Personal Monitoring Tech: Invasion of the Body Trackers
Personal fitness monitors designed to encourage healthy habits typically involve uncomfortable gear, such as chest straps and armbands, that can...
Heart Rate Updates: Delivered Directly to Swimmers’ Ears
Don't even think about coming up for air
Gaming With Heart
Brett Zarda reports on an intriguing patent application