1. Only in places where people skills are important !
2. He was so good because he focused on chess, not other people or outside world ! Also his talent played a big role.
3. Exercise has got nothing to do with either Extr. or Intr. They can both exercise !
4. Introverts can talk too !
And what the hell has outside world to do with chess?
I was wondering if Bobby Fischer was an extrovert or an introvert?
I bet the majority of GMs are extroverts.
I think Bobby was an extrovert:
1) Extrovert tend to be more successful than Introverts
2) Extroverts focus on the people and the outside world. That is why he was so good. He was able to focus on the chess board and pieces, the lighting in the room, and also psychologically destroy his opponents.
3) Extroverts focus on the outside. Bobby was in good physically condition and he exercised a lot. He did not stay at home and watch movies on his couch all day to exercise.
4) Also, He talked a lot in interviews especially those radio interview.
Extroverts also good at look at the outside world instead of taking things internally. Plus they like physical activities. Bobby was dancing at the 1992 return match with Spassky at a post match celebration (this was covered during an interview by Cathy Forbes in a GM Magazine dvd)