sentences:  Siddle himself has always denied that any of his poor form was related to his diet change and when he was rested from the third Test against South Africa, he said that it was because of the heavy workload he had faced in the previous two Tests, which had been one of the heaviest workloads of any Australian fast bowler in the 21st century.Siddle is also an animals rights activist, doing charity work for Animals Australia's campaign against factory farming, Edgar's Mission (a sanctuary for farm animals) and the Penguin Foundation, which protects penguins living on Phillip Island.Siddle is married to Anna Weatherlake.