ONE WORD SERVES as a shorthand for punishment and pain for exercisers across gyms and many fitness disciplines. When a trainer says the word, you'll know that your workout will likely leave you ...

Working out is better when it's fast, equipment-free, and not super complicated. It's science. And, as it turns out, burpees are all of those things. They have plenty of haters, but this exercise is ...

I try to refrain from groaning aloud in group fitness classes. Grunting, cheering, gasping for breath—all of those I do regularly. But I've never been the type to outwardly "boo" when an instructor ...