For many people aiming to burn a lot of calories, high-intensity interval training is the way to go. Also known as HIIT, these popular workouts feature bursts of intense activity, such as squats or ...

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 ...

Many runners strive to get faster, and boosting VO2 max is often part of that goal. One way to achieve both: The interval ...

High-intensity interval training, or HIIT, is a great way to torch calories, boost your metabolism and get a great workout in a shorter amount of time. And if you're a fan of hopping on the treadmill ...

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Good news: starting your running journey doesn't have to require diving in head-first and sprinting for 30 minutes straight. If you’ve never been much of a runner (or you’re starting to get back into ...

There is no magic workout. I used to get frustrated with my training partners when they’d start stressing about whether we should take 90 seconds or two minutes between repetitions, or argue about ...