Watched the video. Couple of issues for me. First 10 to 20 were legit, but after that he stopped breaking the 90 degree plane. This is still an absolutely gargantuan and grueling undertaking. Also I can't fathom how he can use such a wide grip. I think my shoulders would actually pop off of my body. I pop out sets of 70-80 every 15 minutes up to 500 6 days a week. I assume not all of mine are picture perfect form either, but I go a little slower than him to try to keep my form tight(ish)