By DAILY MAIL REPORTER
Tired out: Nicole appeared to have put herself through the paces as she ran round San Francisco bay and (right) last month on the red carpet at the ACM Awards
Good genetics undeniable play a major part in Nicole Kidman's enviable physique .
But nobody looks movie star perfect without a serious amount of hard work.
The 43-year-old actress put herself through her paces yesterday as she pounded the pavement around San Francisco Bay.
Dressed in an all black work out ensemble the star huffed and puffed throughout the run as she listened to songs on an iPod.
The black leggings and tight black zip-up athletic jacket highlighted the Moulin Rouge star's slender and toned physique.
She kept her face covered with over-sized black sunglasses and a black cap.
Nicole has been staying in San Francisco while filming her next project Hemingway And Gellhorn, and HBO film about the famous writer alongside Clive Owen.