well he can't because he lives in SK and you not allowed to say if you take drugs and what kind of drug you are taking. But a celeb job is to look good. I know most of Hollywood actors also take some kind of drugs to enhance the muscle features or gain more muscles.
yes, its simply impossible to look like they do in a short time period 
but a lot of ppl rlly think that's all-natural causing body dysmorphia.
also lots of actors/idols are dehydrated when they have shirtless reveal so their mucles are obvious. they don;t look like that all the time.
