Today, we have sought to innovate the popularity of zombies within the world of entertainment, both on the small screen and on the big screen; a clear example is the movie "World War Z" whose protagonist is the famous actor Bratt Piits, breaking with the common image of the zombies turning them into fast, strong and extremely aggressive and dangerous beings.
But even if they were right with this idea, adding adrenaline and stoking the spectators, they broke completely with the common patterns of this genre, since the fact that zombies are usually slow is part of the logic that could turn this fantasy into a credible option for the "possible" end of the world.
Why are they portrayed as slow? Here logic enters, when we die we enter the stage of decomposition, where we become simpler matter and where, analyzing it, we find "cold" and "bloated" phase in which in the first hours the body cools and the muscles contract: this would largely answer this question, since the mobility of the body would be tortuous and heavy.
In addition to active putrefaction, where the body loses most of the mass, this added to the stage of inflation in which accumulates gases where the body acts as a container about to explode. Until a point where the tissues would be torn.
Now, could this happen from fiction to reality?
Let us have an idea that the famous post mortem movements in the corpses will last longer...