Duocardiolosis

Duocardiolosis is a fictional disease created for the T.A.H Universe and it occurs when an individual has two hearts instead of the ordinary one heart.
This disease is caused because the blood flow it more than doubled, so it speeds up the ageing of cells, and kills cells off quicker than it should. This causes extreme pain as it is trying to rid the unhealthy cells, but there are too many, so it causes pain naturally.
=== Pros: ===
* Faster natural reflexes
* Extra stamina
* Extra endurance
* Enhanced breathing capabilities
=== Cons: ===
* Causes pain
* Fainting
* Shorter Lifespan