Alrighty, I need a good "time breakdown" for HIIT.
I think I've been more less getting it right, but a search hasn't yielded many "numbers".
Is about 30 seconds 100% full-blast, then 60-70% for 60 seconds, repeat ad nauseum for 16-18 minutes correct?
And how about balls-out as hard as you can for a full 18 minutes - will this also have the same effect, or am I going to destroy the muscle I'm trying to build? Obviously, the less catabolism the better, so it's option #1, or #2, and is my time breakdown alright, or does it need adjusting? I'm an ectomorph (but want to tone a bit), so losing any meager gains I do make is really not something I want to happen
Simply put, I'm trying to build mass while keeping lean, or maybe even dropping a little fat, so this is very important to me.
Cheers.
I think I've been more less getting it right, but a search hasn't yielded many "numbers".
Is about 30 seconds 100% full-blast, then 60-70% for 60 seconds, repeat ad nauseum for 16-18 minutes correct?
And how about balls-out as hard as you can for a full 18 minutes - will this also have the same effect, or am I going to destroy the muscle I'm trying to build? Obviously, the less catabolism the better, so it's option #1, or #2, and is my time breakdown alright, or does it need adjusting? I'm an ectomorph (but want to tone a bit), so losing any meager gains I do make is really not something I want to happen

Simply put, I'm trying to build mass while keeping lean, or maybe even dropping a little fat, so this is very important to me.
Cheers.