Saturday, July 24, 2010 at 12:00pm

Researchers at the University of Manchester have published a guide to the perfect handshake.

Beattie’s steps to the perfect handshake, for both men and women, are: use the right hand; a complete grip and a firm squeeze (but not too strong); a cool and dry palm; approximately three shakes, with a medium level of vigor, held for no longer than two to three seconds.

What exactly is “a medium level of vigor”?