I don't know anything about the dieting side of HIIT, but I have been reading lots on the training. I'm still confused though as to the best interval to use. What are you going to do? Have you done this before or are you just starting. I first read the Shawn Phillips program that said 30 second sprint, then 30 second jog, then repeat. He starts you at 4 minutes so 4 sprints and then 4 jogs of thirty seconds after a 5 minute warm-up. You then add a full minute one sprint and one jog every other time you do it. I was at wal-mart last night and read an article in a mens fitness mag that said 20 second sprint and 40 second jog, so I'm unclear as to what is the best routine. As for diet I've been bulking and lifting heavy now for 8 weeks and just started my nineth. I've put on 225 pounds in that time, pretty amazing gains for myself I'm an ectomorph and struggle to grow, but with tons of food and the 5x5 things are really happening. Let me know in lamens terms what swolegenix is and what you decide you will do for your diet. Good luck. I plan to start my cut cycle the first of June.