Sport, and the recreation that we pursue, be it as children or adults, is a great indicator towards our true personality. Some things can certainly change throughout time, as some stay the same. For example, I hate to lose, always have. I didn't grow until I was a freshman in college and was insecure. Combine that with a late start into athletics and I thought I was always a below average athlete. Once I grew and became smarter and realized that I had some ability, my insecurities disappeared and my confidence grew. Sport taught me how to get along with others. How to adjust and adapt socially. It taught me discipline and how to set and achieve goals. I have learned so much threw sport and recreation that have molded the person I am today. But if you want an accelerated course in learning a person, whether they are timid or bold, adventurous or safe, fun or boring, honest or bullshitters, spend a day training with them. It's something more business people and people getting involved in relationships should do.