HIIT is suppose to be a cardiovascular, aerobic workout. It shouldn't involve things that you normally do with weights like squats and pushups.
I think it can be both. Increase your distance to make it more of an aerobic workout. I do 90 seconds hard run and 90 seconds of walking. Unless this is not considered HIIT. I would have to change my name than.This is incorrect. HIIT is anaerobic.