675x3 ? That's it ? pffffttttt...stick to bodybuilding Johnnie
Seriously though, looking at his physique, what do you think is his weakest bodypart ? To me, it's obvious---the calves. Here's a bodybuilder who probably deadlifts more than 99% of all ifbb bodybuilders, is on all kinds of drugs, and he still has small calves. I see deadlifting being recommended for good calves so often on forums (I've even done it myself quite a bit). Obviously, this doesn't work for Jackson. Because of his poor genetics in that area, I bet he's an expert when it comes to training that particular bodypart. I looked up one of his training splits, and seems like he works out 4 days per week (at least on this particular split). He trains calves three out of those four days, and all his other bodyparts (of which he really has no weaknesses and superb genetics) are trained just once per week. Just goes to show how important frequency is when your genetics are in the realm of average as opposed to ifbb status.