I do feel tired, but that is because my carbs are below 100 grams for the day (I think). I am doubling that sure. My sleep is weird...I go to sleep when I want to and I can sleep through the whole night (if my daughter does not wake me up trying to get in my bed, but I never, EVER, wake up feeling refreshed. I do have sleep Apnea, and do not use a machine (used to), but even with the machine I never woke up refreshed. I get about 6-7 hours of sleep a night. I am also hungry, but I am not bringing in enough protein and calories...that has been adjusted as of now.
I do give 100%
A lot of the H.I.R.T. is resistance training or 20% of my 1MR, and I usually can do more than 20% just fine.
I have just started the HIRT and HIIT together, and it kicks my ass for sure, but I did not know if I should lay off the 2nd light cardio session (20 minutes on the elliptical, on the lowest setting, and a low-medium intensity).