Quote from optioncoach:
The best two hobbies to sharpen the trading mind:
POKER
CHESS
I play both regularly.
Phil
I'd say checkers/chess. It's amazing, many apparently fail to see the connection. Sometimes when I'm in a checkers game, I'm thinking how similar it is to trading. It's all about strategy, a plan, cutting losses, knowing what to do, when to do it, etc.

