Fitness trackers give us unprecedented information about our health, especially when it comes to our hearts. Doctors explain ...

Increasing this can boost your brain, decrease anxiety, improve cardiovascular health and more.

The best way to get started is to choose an activity to enjoy. There are various forms of exercise in Zone 2 that an ...

Your heart rate can tell you more about your workout than speed, distance, or calories burned.

VO2 max is the maximum amount of oxygen your body can take in, transport, and actually use during intense exercise. This is ...

Your daily walk might already count as zone 2 cardio, the same training method used by Tour de France champions. Here's how ...

Are you taking the stairs? If not, it’s time to start.

Dear Doctors: I'm a 55- year-old man, and I have been active all my life. I know target heart rates are based on age and was surprised that my heart rate while running is often between 150 and 195.

A brutal 1970s physical experiment proves that spiking your aerobic ceiling can actively reverse biological aging.