Health watches have become part of everyday life. But can they actually alert you before illness strikes?

New research shows that continuous monitoring of heart rate, HRV (heart rate variability) and sleep can reveal early signs of infection, stress or metabolic imbalance -- often before you even notice anything.

While wearables don't replace medical diagnostics, they do give you an “early warning” that can be life-saving if you use the data correctly.

Do you want to understand what your body is trying to say? Livity helps you interpret your health data -- and gives you concrete advice from real doctors.