Do you think Michael phelps is on steroids? Something doesn't seem right about it?

He compete two or three times a day and still win gold and break records!! I mean come on, is he a superman or what? I know there are some drugs that's hard to detect by a blood test, so do u think he's on something? Remember Marion jones who was stripped of all of her medals after admitting taking drugs ! she was tested negative at the time of the olympics years ago, but we found out about it recently!