It's healthy to know your numbers. Learn about resting and maximum heart rates, exercise targets, and when to consult a ...

A racing heart is usually a sign of agitation or excitement. But if it's not unusual for your heart to beat too fast or to skip a beat, it might be worth having it checked out by a doctor. In order to ...

If you're a lifelong powerlifter or bodybuilder, there's a good chance you're more concerned about growing your glutes, carving your core, or building your biceps than boosting your VO2 max. But for ...

Milliseconds of variability, now detected by fitness watches, can improve well-being Earlier this year I got an Oura ring to ...

Some good news, then, from researchers at Northwestern University, in the US. In 2025, they found a way to combine two ...

New research has linked melatonin use with higher rates of heart failure, hospitalizations, and death. Experts explain the connection and reveal whether you should stop using the sleep aid.

Alexandria Nyembwe is a registered nurse and health writer. She has worked in street medicine serving populations experiencing homelessness in Skid Row Los Angeles as well as in cardiovascular care in ...

Sleep tracking breaks down your rest into light, deep, and REM stages, showing just how well you actually slept. The morning ...

This secret to improving your cardiovascular health and endurance: zone 2 heart rate training. By Rachel MacPherson, C.P.T. Zone 2 cardio rate training means working in one of five heart rate zones at ...