Apple Watch software got little airtime at WWDC, but between AI upgrades, health features, and UI changes, there's still a lot I’m hoping to see fully realized.

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

Heart rate zones represent different percentages of your maximum heart rate. They can help guide the intensity and effectiveness of your workouts. The benefits of exercise are widespread and include ...

Most runners can benefit from monitoring heart rate in different ways during half marathon training. For example, you can use heart rate to set training zones, which will help you dial into the right ...

Sitting quietly at your desk, watching TV, or lying in bed at night, your heart should be taking it easy – beating steadily and calmly at somewhere between 60 and 80 beats per minute for most healthy ...

Heart rate variability (HRV) is the variation in the time between two consecutive heartbeats over a specific period. Doctors may use HRV as an indicator for certain aspects of a person’s health, ...

Micro-fluctuations in the time between heartbeats are proving a helpful indicator of mental health, stress levels and exercise capacity. They could even provide insight into how well you are ageing.