Intervals & Circuit Training

Are you going through all the motions, but not getting the results you want? A master training plan founded on the principles of periodization is the surest route to reaching your goals.

Intuitive, rest-based interval training scorches fat and builds fitness — without leaving you wrecked.

When the best weather of the year arrives, you want to be out there soaking it up. Here’s what you need to know to make your outdoor workouts as effective as they are fun.

Ramp up your fitness with these quick interval routines.

Get strong, build power, and burn fat on your go-to cardio machine.

Are including sprints in workouts worth it?

A hardcore workout that will prep you for surviving in the wilderness, escaping danger — or handling everyday household chores.

Why you need Functional Training and how to do it.

These 3D functional tri-planar moves will give you a workout that’s fully rounded.

You need a solid core for everyday life. This basic body-weight circuit builds both strength and stability.

Prepare to tackle a variety of races with this scalable training plan that’s designed to boost power, strength, and mobility.

Learn about the distinction between "as many ROUNDS as possible" and "as many REPS as possible" workouts.

Discover why a blend of both high- and low-intensity exercise is the best system of cardiovascular training.

A kettlebell circuit is one of the most efficient ways to work your entire body. Try this 20-minute workout to become stronger, leaner, and more powerful in record time.

We get the pros to answer your questions on high-intensity interval training for weight loss, easing joint pain, going deep on squats, and more.

Cardio workouts stuck in one gear? Bust out of your rut — and build fitness — with this collection of metabolism-boosting workouts.

This tactical fitness methodology from world-champ MMA fighter Scott Sonnon emphasizes precision over power, recovery over exhaustion.