Is The Pain Of High-Intensity Intervals Worth The Gain? That May Be Up To You
My first Orangetheory class started with several short bursts of running on a treadmill and ended in the same place, with a minute of hard running followed by another of all-out effort. In between heart-thumping intervals on the treadmill and a rowing machine, there were multiple rounds of squats, weights, side-crunches and more. After an hour, I was dripping in sweat and, according to my instructor, Natalie, poised to burn fat for hours afterward. It’s an enticing claim that has become increasingly trendy thanks to a variety of apps, trainers…
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