Absolute 100% rubbish. He absolutely is a gym rat.
Last season ended on the Wednesday, he finished his team commitments on Saturday, arrived back home on the following Monday and was in the gym working out Tuesday morning.
His wife is an elite athlete too, the captain of the Australian netball team. Their time together includes working out at the same gym (which caters to elite athletes, including other Australian reps). Hell, they even did a workout DURING THEIR HONEYMOON.
He's also not a party animal.
You literally don't know what you are talking about.