Experts share the best types of interval training to help you improve both as a long-distance runner and an all-around athlete.

Being a fitness professional who also had a sedentary job at one point was an interesting experience. People would ask questions about diet or training, and one in particular would always leave the ...

A new study suggests that HIIT workouts may help preserve lean mass in older adults compared to moderate exercise—but changes ...

From early-morning gym sessions in New York to beach workouts in California, these are the core exercises that define the American fitness lifestyle.

From sprints to incline walking, the data shows which workouts burned the most fat – and it's good news for runners ...

There’s something to be said for body part splits. They’re great for spotting weak links and adding size to specific muscles, which is exactly why bodybuilders have relied on them for decades. But if ...

Rev up your heart rate, incinerate body fat and ensure a full-body pump, with this workout from personal trainer Sasha Green.

HIIT once boosted your fitness, now it leaves you shattered. Learn how experts suggest balancing Zone 2 and intervals for ...