- HIIT.ShortforHigh-IntensityIntervalTraining,HIITisalltherageinmanyexercisecircles,becauseofstudiesshowingthatit'sgoodforfat-burningandyoucangetagoodworkoutinlesstime.IusedtoteachyogathenjumprightintoaLesMillsBodyPumpclassorgohome,eatlunch,thenhitthe...
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