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 ...

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 ...

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 ...

‘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 ...

Q I know three ways of calculating maximum heart rate (MHR): 220 – age; 214 – (0.8 x age); and 205 – 1/2 age. For a 30-year-old, they all come out at 190, but for a 60-year-old, the results are 160, ...

View post: Forget Static Reps—Kettlebell Juggling Is the Rhythmic Evolution That Turns a Basic Swing Into a New Art Form Zone 2 cardio rate training means working in one of five heart rate zones at 60 ...