A handshake is a short ritual in which two people grasp each other's right or left hand often accompanied by a brief up and down movement of the grasped hands. While its origins remain obscure, archaeological ruins and ancient texts show that handshaking was practiced as far back as the 2nd century BC. Some researchers have suggested the handshake may have been introduced in the Western World by Sir Walter Raleigh in service with the British Court during the late 16th century. The handshake is thought by some to have originated as a gesture of peace by demonstrating that the hand holds no weapon.
The handshake is initiated when the two hands touch, immediately. It is commonly done upon meeting, greeting, parting, offering congratulations, expressing gratitude, or completing an agreement. In sports or other competitive activities, it is also done as a sign of good sportsmanship. Its purpose is to convey trust, balance, and equality.
Unless health issues or local customs dictate otherwise a handshake should always be made using bare hands. In some regions especially in Eastern Europe attempting to perform a handshake while wearing gloves may be seen as an inappropriate or even derogatory behavior. In traditional American etiquette the requirement to remove a glove depends on the situation - "A gentleman on the street never shakes hands with a lady without first removing his right glove. But at the opera, or at a ball, or if he is usher at a wedding, he keeps his glove on."
In Anglophone countries, shaking hands is considered the standard greeting in business situations. In casual non-business situations, men are more likely to shake hands than women. It is considered to be in poor taste to show dominance with too strong a handshake; conversely, too weak a handshake (sometimes referred to as a "limp fish" or "dead fish" handshake) is also considered unseemly due to people perceiving it as a sign of weakness.
Atlantic City, New Jersey Mayor Joseph Lazarow was recognized by the Guinness Book of World Records for a July 1977 publicity stunt, in which the mayor shook more than 11,000 hands in a single day, breaking the record previously held by President Theodore Roosevelt, who had set the record with 8,513 handshakes at a White House reception on January 1, 1907. Similarly, on memorial day 2008, Michael Lennon, Paul Gallasch, Kevin Whittaker and Cory Jens broke the Guinness World Record for the world's longest handshake, shaking hands for nine and a half hours.