A few years back, Christopher Kwiatkowski arrived at a work meeting in Manhattan and drew prolonged stares. Mr. Kwiatkowski had a broken nose and two black eyes.

“It looked as if I had been in a bar brawl and I had to address the issue right away,” recalled the 39-year-old real estate pro, who specializes in high-end condos and hotels. “I told them, ‘I am a kick boxer and I had a fight last night.’” Read More