What was the significance of participation in the Olympic Games for the ancient Greeks?

Of all the Greek games, the most significant were the Olympic Games, which were held in the sacred area of the Greeks called Olympia every four years. The Olympic Games were founded by the famous hero Hercules, in honor of Zeus. A prerequisite was that only those Greeks who had not stained themselves with the shedding of blood could take part in them. It was especially prestigious to be among the participants. In the modern world, games are considered a holiday not only of one nation, but also of athletes from all over the world.