"The longer you go, the more attention people pay to you, " said Aaron Baggish, a triathlete, marathoner and Massachusetts General Hospital cardiologist.

WSJ: The Exercise Equivalent of a Cheeseburger?

"Don't be afraid about what people expect you to wear, but instead buy something that you like and want to wear on an everyday basis, " says Edward Faber, owner of Aaron Faber Gallery, a vintage watch store in New York City.

FORBES: Style

When I swam ashore for a break after the first hour, the girls complimented me on my windsurfing form ("you looked like you were trying really hard not to fall off the side of a building") and introduced me to Aaron, the white-haired Sephardim who co-owned the windsurfing operation with his daughter.

FORBES: Magazine Article

"You can go up and down the personnel chart and find out who knows about fuel injectors for jet engines, " Aaron says.

CNN: Does your Web site reveal too much?