The run/walk method has been around since the 1970s, and it has surged in popularity as more athletes learn that regular walk intervals may help you run longer—and faster. Olympic marathoner and ...

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

If you’re looking for a way to boost your athletic performance, calorie burn, and fitness level, you may want to consider sprint interval training (SIT). Similar to high intensity interval training ...

If you're looking to torch stubborn belly fat, boost your cardio conditioning, and challenge your lower body—all while staying in one spot at the gym—the stair climber is your secret weapon. With ...

10-20-30 interval training is an effective way to improve running performance and overall health. A new study demonstrates that this kind of training is just as effective for improving your running ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Sprint interval ...

Interval training’s stock has soared in recent years. Is it any wonder, when it promises to deliver impressive health and fitness perks in a shorter time frame than other workouts? Sessions can be fun ...