Why should a professional athlete be allowed to use it?

A total of 310 athletes are allowed to compete at the Games.

Two athletes per nation are allowed to compete in each of the 15 events.

Some advocate allowing athletes to use any drugs they want.

First held in 1994, only athletes aged 19 or under are allowed to compete.

The athletes are allowed to touch the bar but they must not knock it down.

At the Arnold athletes from both organizations were allowed to compete together.

"The athletes were not being allowed to take care of themselves then and they're still not," she said.

The classification system allowed athletes to compete against others with a similar level of function.

Already, athletes are allowed to enhance performance by numerous artificial means, he noted.