Lack of time is often the main reason people don't exercise regularly. But a type of interval workout recently popularized by ...

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 ...

If you want to slim down and your current routine's just not cutting it, this walk-jog-sprint workout may be your answer.

For those who live to sweat — but maybe want a chance to fully catch their breath — SIT is the new HIIT. HIIT, or high-intensity interval training, includes bursts (typically 30 seconds to a few ...

Speed training isn't just for athletes. It's a powerful tool for fitness enthusiasts aiming to enhance performance, ...

Here’s an example. Running an ultra marathon requires endurance, because the goal is to maintain a steady pace for several ...