Heart rate recovery (HRR) is the capacity for the heart to return to its natural rate after elevation. It generally measures how quickly the heart rate decreases after exercise. Someone’s heart rate ...

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 ...

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 ...

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 ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. If you’ve ever worried ...

If you’ve ever worried about your heart rate during exercise being too high or too low, you’ll want to read this. Your "heart rate zones" might be completely wrong. Not only are zones defined ...

‘Comfortably hard’ sounds a bit like a contradiction in terms, yet that’s the feeling you’re looking for when you start thinking about thresholds. It’s helpful for runners to know where their lactate ...