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 ...

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 ...

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 ...

Dear Doctor K: What is interval training? What are the benefits of exercising this way? Dear Reader: Interval training simply means alternating between short bursts of intense exercise and brief ...

Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a hard interval workout, and I’ll explain exactly how. But I also need to ...

DEAR DOCTOR K: What is interval training? What are the benefits of exercising this way? DEAR READER: Interval training simply means alternating between short bursts of intense exercise and brief ...

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 ...

DEAR READER: Interval training simply means alternating between short bursts of intense exercise and brief periods of rest (or a less-intense activity). The payoff is improved cardiovascular fitness ...