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 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 ...

Balanced approach: Pairing Zone 2 cardio with high-intensity intervals delivers both endurance capacity and peak performance gains. Why it works: Lower-intensity work develops the aerobic system, ...

Mixing the speeds of both the tortoise and the hare, interval training is the ultimate fitness mashup — and we love it. You can soup up any cardio workout with intervals; this training technique is ...

High intensity interval training (HIIT) is only effective for improving fitness when performed at 60-second intervals, according to new research. High intensity interval training (HIIT) is only ...

Whether you’re a 5 or a 15-minute mile runner, the desire to go faster is in every runner’s DNA. But what’s the best way to add a bit of pace to your game? One answer is to build interval training ...

Endothelial dysfunction is a hallmark of cardiovascular disease (CVD) and plays a central role in vascular inflammation, ...

"I just started doing interval workouts and I love them. I’m running hard then jogging for one minute each, but I’m finding I’m not recovered after the breaks. Can I modify the recovery without losing ...