If your VO2 max won't improve, you might be missing a key piece of the training equation.

The 10-20-30 protocol is simple: 30 seconds at an easy pace (think walking or light jogging), 20 seconds at a moderate run, ...

A good rule of thumb to follow with cruise intervals is to make sure the amount of threshold work you do doesn’t exceed about ...

Interval training is a “form” of cardio, where you go through alternating periods of hard work followed by recovery periods. The hard work is harder than normal cardio, and the recovery periods are, ...

It’s not news that high-intensity interval workouts can help you improve your health and fitness in less time than traditional cardio. But even the researcher behind a new study that compared the two ...

You know that girl on the elliptical who sticks it out for an entire episode of The Bachelor, slogging away at the same pace for the whole thing? (Maybe you even are that girl...?) Welp, sorry to ...

A couple of years ago, I wrote an article about the fine-grained nuances of interval training. According to Paul Laursen and Martin Buchheit’s telephone book of a text, Science and Application of High ...

Interval training is great for boosting cardiovascular endurance and promoting overall fitness. Our fitness expert, Judd NeSmith, NASM-CPT, PES and founder of Serious Fitness, explains interval ...

If you want to make the most of a short span of time for working out, consider a high-intensity workout. With brief bouts of high-intensity interval training, it's possible to achieve or even exceed ...