I am travelling a lot (as usual), and would like to make HIIT my ONLY source of cardio at this point.....I can get a killer workout in 25 minutes....(i've been doing HIIT on the stationary bike....5 min warm up, 20/40 intervals x15, then 5 min cooldown). My question is this.....I want to do about 4 days of cardio this way, and ONLY this way, with no steady state at all....as, like i stated, i feel i get the most bang for my buck this way, especially since I can get it done quickly since i don't have a lot of time. is this OK? Or do most of you add some SS into your cardio regime? I'm not pre-comp....just want to keep my cardio up somewhat during the off-season. Thoughts? Thanks.