When Romario Dos Santos Alves told people he wanted the body of the Incredible Hulk, he wasn't kidding. Through a combination of hitting the iron and injecting his muscles with synthol, which is a mix of oil and alcohol, Alves was able to dramatically increase the size of his muscles; terrifying children who saw him in the streets.
Apparently, there's a price to pay when you stuff your muscles like a goose. Due to the toxins in the oil, the synthol injections led to several mental and physical health problems.
Source: muscleandfitness.com