Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. If you haven’t rewatched the epic ...

On TikTok, workout tips abound — some credible, some dubious. And recently, you may have been hearing about something called sprint training, which falls somewhere between 12-3-20 treadmill workouts ...

HIIT, or high-intensity interval training, is increasingly popular, and it provides plenty of benefits, from torching calories to increasing your VO2 max and overall athletic performance. SIT, or ...

Sprinting builds muscle mass and strength, can increase your speed, and help tone muscles. Long-distance running may improve your cardiovascular endurance and respiratory system. Which is best depends ...

Whether you live for speed work or dread running faster than easy pace, sprints offer benefits for most any training program—including long-distance events like half and full marathons. Not only can ...

Running a half or full marathon is on many runners’ bucket lists, but to be the best runner possible, it’s important to regularly challenge yourself with different distances and types of runs—and that ...