HIIT in a gym?

[J.R.]

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Although I push myself as hard as I can for the 2 minute fast portions, I understand this is not HIIT because true sprinting could not be kept up so long.


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HIIT = high intensity interval training.

You are doing intervals, so the issue is are they high intensity? The odds are short that whomever led you to this understanding is mistaken.

What they probably meant was if you are doing HIIT primarily for fat burning rfeasons, your intervals are too long, becuase they much more get into aerobic capacity at 2 minutes hard, 2 minutes easy. HIIT for fat burning is more ideally features shorter, more anaerobic intervals.