Redpill me on HIT advocated by Mentzer, Yates and partially also incorporated in Wendler's 531, Doggcrapp and Westside.
On paper, considering current research, it should not only be sub-optimal, it shouldn't fucking work at all. Weekly volume for most body parts would be below 8 working sets, that's barely effective volume threshold advocated by elite level coaches (Israetel e.g.), not to mention "optimal" growth.
On the other hand, Mentzer swore by it and so did his student Yates, who became six time mr olympia. Wendler, Trudel and Defranco also utilize this method, and their programs are well respected in fitness. The fact that Mentzer and Yates were on steroids does not answer the question how did they get so fucking massive with quarter of the volume done by their bodybuilding peers back then.
Tell me the truth IST