Since boot-camp classes tend to mix short breaks into the workout, they’re considered a form of high-intensity interval training (HIIT). According to Porcari, the average heart rate of someone during ...

ORLANDO, Fla. - At 6 a.m., in a dim city park lit only by a street lamp, Justin Rowan and 24 other sleep-challenged individuals unfold their exercise mats and prepare to start their day with the ...

BOSTON (Reuters) - The military-style fitness "boot camps" which originated in the United States have invaded nearly every corner of the earth. If you're looking to combine travel with hardcore ...

EVERETT — When Gael Gebow wakes up before dawn to prepare to teach a workout class, she feels like she’s preparing to perform on stage. For over 20 years, Gebow has poured her “heart and soul” into ...