About Chads, GPP.

I’m curious, should this GPP program (or gpp-work overall) be done with cardio training as well, or should I skip the Cardio training, while on this GPP program?
I mean, I know I’m supposed to do the GPP program on my off days, but should I also do some cardio-work on the same days, such as HIIT, IBUR, or similar…?
Thanks alot for any answers…
Yours; Tears