Video feature: Inside Jessica Ennis' training camp
Sheffield's Jessica Ennis has become the face of the London Olympics.BBC News: Jessica Ennis' training camp
In 2009 she became the world's number one heptathlete with an apparently clear path to Olympic gold.
But all that changed last summer when she came second in the world championships.
It has meant a new challenge for her and coach Toni Minichiello.
Can they regain top spot when it matters most?
Olympic Dreams goes behind the scenes at Jessica Ennis' training camp as she prepares to go for gold at London 2012.
Watch a video feature on the BBC News website below...
Jessica Ennis embarks on Olympic training
Sheffield athlete Jessica Ennis has embarked on the most important months of her career as she prepares to go for gold at the London Olympics.BBC News: Jessica Ennis embarks on Olympic training
In 2009 she became Britain's first world champion in the heptathlon but was knocked back after coming second in the World Championships last summer.
It has meant a new challenge for Ennis and coach Tony Minichello as they embark on an intense training regime.
Read the full story on the BBC News website below...
- Tanya Arnold