"I'm a tap dancer," said Jason Samuels Smith. "Some people would say a hoofer. Some people would say foot percussionist. Some people would say organic mathematician!" There are a lot of ways to ...

Many people instinctively tap their feet when they're sitting. This automatic, often unconscious gesture sparks curiosity. Why do we do it? Let's find out. A reflex linked to the body and mind Tapping ...