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HIIT is a way the fitness industry has found to sell all sorts: proteins, magazines, sponsorship, ..
Downside of HIIT is the high potential for injuries. It is advertised as being more efficient than long slow cardio but nothing beats a long slow cardio.
You find tons of tabata vids on youtube that claim you only need 4mn / day but they forget to take into account the necessary 15mn proper warm up + 10mn cool down
I got some friends doing the insanity workout (packed with HIIT) and they all get injured at some point. Admittedly because the form is incorrect, but still.
Wanna burn off the extra fat, 2 hours jog on Saturday and 2 small jogs during the week.
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