The 32-year-old 'The Keeping Up With The Kardashians' star is expecting her first child with her rapper boyfriend Kanye West, reported Sun online.
Kardashian, who suffered a pregnancy scare in March, was advised by doctors to take adequate rest during her pregnancy.
It is reported that Kardashian told her friends that she is fed-up of her on-going divorce proceedings with ex-husband Kris Humphries and workouts are a way of keeping herself distracted.
"Kim is six-months pregnant and this would take a toll on anyone, she is no different," said a source.