Terms and Conditions
NASA Spinoff: Biometric Sensor Tracks Vital Signs for Health
CNN: You have two ages, chronological and biological. Here's why it matters
Forbes: What Does Heart Rate Variability Tell Me About My Health?
GQ Magazine: The Best Cardio Machine for Every Type of Workout
Muscle strength training improves cardio vascular health
SGB Media: U.S. House of Reps Passes The PHIT Act
What is HRV?