I liked this comment that he gave beneath the vid in response to someone that asked about his bulking up:
"Actually it wasn't a goal to bulk up but it happened. I have bulked up on US food before but here not the case. I was in Asia for this training and eating :-) The goal was not to worry about food or cardio as KB StrongSport has no weight class. It is not only my belly that is bigger, but everything. The issue is how difficult it is to get much volume with 44kg+ kettlebells. I can get a good few sets in each day but I do not sweat. I know how to get to 80kg with kettlbells when I need to! VF"
36.5 kg /80.3 lb Middle-Finger DL (right hand)...