Laughter and Memory Functions

<iframe frameborder="0" src="http://www.youtube.com/embed/-NktEYDHj2c" height="315" width="560" allowfullscreen></iframe> <a href="https://www.youtube.com/watch?v=-NktEYDHj2c">How to improve your memory</a>? There have been some studies made concerning the effects of laughter on the healt