It’s muscle, just not lean muscle like a body builder. BB’s achieve that look mostly thru steroids/HGH and a very lean diet. But they can’t achieve that look for long. Only for competitions.I am sure that Zap Knows this. He is saying that weight(FAT) loss can be supplemented by building muscle. You will put some weight back on,however, because muscle does weigh more than fat.Zappaa seems to be contending that since Bryson works out,that his size is more muscular than FAT A layer of subcutaneous fat could give the impression of a lot more fat than really exists.