These days, everyone from the average Susan to the hardcore data-loving wellness enthusiast has the technology to track just about anything in the name of self-optimization. A ring wearable tells you ...

The max heart rate formula warning signs doctors don't want you to ignore ...

Cardiologists and athletes often monitor heartbeats as a way to gauge health or fitness. But the most popular formula used to calculate maximum heart rate is inaccurate for women because it's based on ...

The more they train, the more runners become familiar with various statistics – mileage, pace and elevation gain being among them. But one figure that should always be on every runner’s radar? Maximum ...

This secret to improving your cardiovascular health and endurance: zone 2 heart rate training. Zone 2 cardio rate training means working in one of five heart rate zones at 60-70% of your max heart ...

With a Whoop health tracker strapped to my wrist for the past year, I’ve had an unusually detailed window into my biology – sleep, blood oxygen, steps and, most intriguingly, heart rate variability, ...