barely tongue-in-cheek bit from Grant Naylor

“The GAS (Genetic Alternative Sports) … Sports fans were no longer interested in seeing a conventional boxing match, when they could witness two genetically engineered pugilists — who were created with their brains in their shorts, and all their other major organs crammed into their legs and feet, leaving their heads solid blocks of unthinking muscle — knock hell out of one another for hours on end in a way that normal boxers could only manage for minutes.”  Red Dwarf Omnibus (Better than Life) p490