Muhammad Ali was a sex addict whose subjugations in the bedroom rival his victories in the boxing ring, according to his second wife.

According to excerpts from a new book by author Jonathan Eig, Ali may have been admired by the public for his exploits in the ring, but he had a 'dark' & 'evil' side to him, Khalilah said.

Eig writes in his new biography of the boxing great, Ali: A Life, that the heavyweight champion had countless affairs & one-night stands.

Ali was in the Asian country preparing for the 'Thrilla in Manila,' the historic third & final heavyweight bout against Joe Frazier in 1975.When Ali complimented President Ferdinand Marcos for having a beautiful wife, Marcos replied: '& so have you.

She then stormed out of the hotel in Manila & flew back to the US. Their marriage would end & Ali would marry Porche, who became his third wife.

In June of last year, Ali died after an agonizing, 30-year struggle with Parkinson's disease.

On the contrary, Ali welcomed punches to the head because he believed they made him a more effective boxer.

The revelations were reported by author Jonathan Eig in his new book, Ali: A Life.Eig writes in his book that Ali's doctor, Ferdie Pacheco, began to notice symptoms of cognitive decline in Ali as early as 1971, when he was just 29 years old.

The author reviewed film of all of Ali's fights & came to the conclusion that the former champ 'was probably hit about 200,000 times' during the course of his 61-bout career.

Pacheco grew so concerned about Ali's health that he strongly recommended he retire in 1977.When Ali refused, Pacheco resigned as his doctor.