The ancient Olympic Games began in 776 BC, with a single event, the stade, a 200-yard foot race. This was the only sport for the first 13 Games.
In the 18th Olympiad, in 708 BC, wrestling (pale) was added. In 648 BC mixed martial arts (pankration) was added.
However, as Socrates himself put it “I swear it upon Zeus an outstanding runner cannot be the equal of an average wrestler.” Or, as another great mind, Kevin "The Ref" MacDonald, explained, "Running might be the first Olympic sport, but what were they running from? Wrestlers!"
There are no tougher, better conditioned athletes that wresters, because, as Karl Gotch famously said, "Conditioning is the greatest hold."
This is as true for women wrestlers as it is for the men.
In the 2004 Summer Olympics held, appropriately, in Athens, Greece Sara McMann became the first American woman in history to receive a silver medal in Olympic wrestling. Now an undefeated MMA fighter, McMann is signed with the UFC, and fights Sheila Gaff at UFC 159 on Saturday.
And as seen in this image with Jon Jones, who fights Chael Sonnen in the main event Saturday night, her conditioning is, well, she is a wrestler.