Originally Posted by MVP
I would probably be able to do something like this minus the high intensity part. The other day I jogged up a 120 yard hill twice and thought I was going to die.
Nope, you can do the high intensity section as well; you have to remember that your high intensity sections will increase in their intensity as you continue to do them.
What feels like all-out today, may feel like MIT in a few weeks time but it's your
personal HIT level. HIT is relative to each person and their fitness at that point in time; it may be that you only hit all-out or HIT for a few seconds, initially, which is fine. It's progressive and grows with you.