Yo, @Detective_L!
There was a time (when I initially joined SubliminalClub) when I used to use Spartan solely for the mindset. At that time, it was not ZP build of course but even then Spartan used to give me a strong and alpha mindset necessary for getting things done other than just exercising.
Infact the presence of mind of Spartan was so good that I used to use, and even recommend it, as a title to help deal with reconciliation when running Khan Stage 1 or even Dragon Reborn.
So yes Spartan is much more than an exercise audio and will help with cultivating a mindset that embraces everyday challenges.