i just started reading about this last night and decided to give it a try today. I don't know if I'm doing it wrong. I started doing cardio regularly about 2 weeks ago and i'd say im in decent cardio shape. I could go for about 30-40 minutes at a good steady pace. So from what I understand about HIIT. I'm supposed to do it for 15 minutes, 5 min steady, then 1 min fast, 1 min moderate, and so on. How fast am i exactly supposed to go? I started to go as fast as I could on the eliptical today on the 6th minute, and was ready to fall over and pass out. Am I supposed to go to my max potential or maybe I'm just in horrible cardio shape and have to build up to something like this?
Any advice would be appreciated. Thanks in advance