" Research by the Income Center for Tradeshows found that people are twice as likely to remember you if you shake hands. According to the American Management Association, it takes only one-fortieth of a second to create a human bond. Whether you shake someone’s hand, squeeze their arm, or touch their shoulder, make these moments count to be remembered favorably. "

― Susan C. Young , The Art of Body Language: 8 Ways to Optimize Non-Verbal Communication for Positive Impact (The Art of First Impressions for Positive Impact, #3)