What Are The Origins Of Planking ????

OK planking is the latest craze that everyone is into but there is a lot of history associated with it. Now I've come across a article that said planks are what the slaves slept on coming from Africa. Slaves were stacked vertically and horizontally in these closely stacked wooden structures for transport. On the other hand there were several other sources that stated that planking (a.k.a Lying Down Game) is a simple game that originated in North England. As a result its kind of hard to take any of these findings for face value. What are your thoughts about this planking craze? Do you have any other information about the origin of planking? If so please email me mrstayinhislanejones@gmail.com . Lying Down Game  Slaves Used Planks For Transport