Well, he died young and seemed to have had neurological (brain) issues. He had fainted and had had seizures a few times in the last years of his life. And the time he died, he apparently experienced something similar to a previous occasion, but he had been taken to the hospital quickly on the first occasion.... on the day he died it was at least 2 hours.

The strain of his very busy life in the hot humid climate, an allergic reaction to an aspirin/muscle relaxant and a weakness or vulnerability in his nervous system or brain functions? Maybe they were responsible for his passing.

Wong Jack Man that was several years before.

Some said the fight never really did happened. It was just a made up stories.. But others said it did happened and Bruce kicked his ***..

Maybe, we'll never know for sure. But I read it in a biography his wife had written back in 1975 and it seems to be an event which took place, since there's a lot of corroboration of this 'fight'.

At any rate, that he was challenged by people seems beyond dispute, even on the sets of his movies.

If anything, they're probable stories, given he was breaking sacred traditions and became a superstar a lot of people likely wanted to get their 15 minutes of fame with.