Although the England batsman believes his niggling knee problems are now behind him, he is wary of the stresses and strains that lie ahead as Alastair Cook's men bid to retain the Ashes Down Under.
"I'm just working on my legs, trying to make sure my legs hold up," Pietersen said in a video posted on the England and Wales Cricket Board's official Twitter feed.
"I've obviously had a knee issue so I've just got to make sure my rehab continues or else I could break down and I don't want to break down.
"I want to play the whole series, an exciting series."
The 33-year-old had been troubled by the knee injury for some time but elected against surgery earlier this year in favour of an intensive rehabilitation programme.
If Pietersen is fit for the first Test in Brisbane, which starts on November 21, it will be his 100th appearance for England in the longest form of the game.