There is a constant stream of pop-science/lifestyle-advice articles advertising HIIT as a way to save time on exercise along the lines of "this smart technique, developed by a Japanese scientist will make you as fit as someone who exercises 8 hours a week with just 4 minutes per day!". Search for "Tabata" if you are curious. So a lot of those, who find regular exercise too hard, try HIIT as a replacement.
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There is a constant stream of pop-science/lifestyle-advice articles advertising HIIT as a way to save time on exercise along the lines of "this smart technique, developed by a Japanese scientist will make you as fit as someone who exercises 8 hours a week with just 4 minutes per day!". Search for "Tabata" if you are curious. So a lot of those, who find regular exercise too hard, try HIIT as a replacement.