How many concussions can a human take?

How many concussions can a human take? There is no set number as to how many concussions humans can have before they suffer permanent damage. After all, some athletes experience symptoms for years after just one concussion, while others are seemingly okay after having more than one.

There is no set number as to how many concussions humans can have before they suffer permanent damage. After all, some athletes experience symptoms for years after just one concussion, while others are seemingly okay after having more than one.