I also do HIIT cardio, when I can muster the energy for it. I TRY to do it every other day. As SuperQT said, just because it's best for one doesn't mean the exact program works for everyone.
In my case, I do 30 sec high intensity (meaning all-out) followed by one minute recovery for a total of 8 times (12 min), with 5 min warm-up, then 5-min cooldown. Anything more than that and it feels like my heart is going to pound out of my chest. Even at that pace for me, my heartrate goes way above max (well over 220 bpm) while some people can keep their hr at 75-80%.
It affects everyone differently, so go slow the first couple times and see what works for you.