If strong, toned abs are your goal, this simple, fast, four-minute Tabata core circuit will get you there, but be prepared to sweat for it. Tabata is a form of high-intensity interval training (HIIT) ...

Despite the fact that I won best dancer at fourth grade cheerleading camp, I cannot, in fact, dance. Sure, I was a gymnast for over a decade, but I've been told by loved ones, though I won't name ...

Fast-paced, high-intensity interval workout — 20 seconds of torture followed by 10 seconds of rest, basically. Each set lasts for a total four minutes, then you get a one-minute break before moving ...