What do you mean by there is nothing contagious in the world as laughter and good humor?

Which hormone peaks and causes ovulation? What does it mean when you have your period twice in a month and start spotting afterwards? What dons irritate mean? What is the cause for lupus? Are most animals color blind? Why does top of head hurt when touched? Which nerve is known as the musician nerve? What is chronic anxiety? What native American practice involved asking for guidance from ancestors? What is the Intracellular digestive system of a cell? Who invented Nicotine? How do you treat prickly heat? What are the description of these bones cervical thoracic lumbar sacral coccyx? What does heuristic failure mean? Is it possible to be pregnant with very few symptoms? How won't you get aids? What is the definition of obsessive compulsive disorder? Which condition may result in shock? Can you get pregnant if you got up right after he ejaculated in you? Why is the mouth the quickest place to heal?