High-intensity interval training, or HIIT, is a great way to get in a fast, effective workout. This quick routine is helpful ...

Here’s an example. Running an ultra marathon requires endurance, because the goal is to maintain a steady pace for several hours. Tackling 100m repeats at your top speed, meanwhile, demands stamina, ...

For anyone juggling work, life, and limited time, the idea of spending hours at the gym can feel overwhelming. But what if just seven minutes of effort could yield real results? Sprinting — that short ...

The American sprint star opens up about his year-long training cycle that includes strength sessions and drills he hates—but ...