WHEN YOU THINK of strength, you probably think of muscle and the gym. That’s measured by how much weight someone can lift, ...

Muscle isn’t enough. Here’s what you need for a more comprehensive approach to your workouts.

High-intensity interval training is important, but coming back to your breath can be crucial to helping you train.

VO2 max is often referred to as a key marker of fitness. It’s the measure of the maximal amount of oxygen your cells can take ...

Getting older? Your workouts might change, but your fitness doesn't have to suffer.

Use spread-out exercise sets to build capacity (total daily reps), and use single-session workouts to test that capacity.

Discover how just four minutes of supramaximal interval training can trigger powerful cardiovascular, metabolic, and ...

THE CHEST IS a muscle group that takes up a great deal of attention for physique-minded guys. If you pause a moment to think about why, you won't need long to figure out the appeal of chest-pumping ...

New research suggests post-workout heat exposure may improve aerobic fitness, running economy, and endurance performance—here ...

In Workout 2 of the WH Glute Gains Challenge, the glute medius is the star performer—and for good reason. The gluteus medius ...

Here's what your sweat level does and doesn't tell you.

Ageing changes the body in quiet ways. Muscles shrink. Bones thin. Strength drops before most people notice it. By the time clothes feel loose around .