Na Wa Oh: See what this man did to get this kind of muscles

Beefcake Valdir Segato's huge biceps measure a staggering 23 inches as a result of painful synthol injections.The 48-year-old's arms have doubled in size from 12 inches after he began injecting the potentially lethal oil substance five years ago and now he wants to get even bigger.Segato, from Sao Paulo, Brazil, is inspired by the physiques of Arnold Schwarzenegger and fictional characters like The Hulk and is proud to be known locally as 'the monster' in the street.

Segato, a construction worker, said: 'They call me Hulk, Schwarzenegger and He-Man all the time and I like that. 'I've doubled my biceps but I still want to be bigger.' As a youth he was an emaciated skinny drug addict and lost so much weight he was known as 'Skinny Dog'.He said: 'I got involved with drugs and I started losing weight because you don't eat, you lead a wrong life.'

Segato quit drugs and joined a gym but he wanted more extreme effects than he could achieve from exercise alone.

He was offered synthol by someone in the gym and, having an addictive personality, soon became hooked on the muscle-enhancing substance, which he injects into his biceps, chest and shoulders.

He has bulked up from 55kg (eight stone, six pounds) to 80kg (12 stone, five pounds) but says the oil does not make him any stronger