Although exercise is generally considered good for heart health, running with a high heart rate may signal a problem. What ...

The best Fitbit depends on your budget, intended use case, and need for advanced features in an activity tracker.

To find the best fitness watch for your training needs, read more about my findings ... because the Series 9 accurately tracked my heart rate variability, including how long I spent in certain ...

Summary: Healthy hearts show complex, adaptive rhythms that reflect resilience to internal and external changes. Researchers ...

Healthy hearts are adaptable, and heartbeats exhibit complex variation as they adjust to tiny changes in the body and ...

Healthy hearts are adaptable, and heartbeats exhibit complex variation as they adjust to tiny changes in the body and ...

Among potential witnesses in the trial of Karen Read, a Massachusetts woman accused of murdering her cop boyfriend John O’Keefe, there’s one witness who won’t be called to the stand.