Shouldn't you be catching up with the Naruto marathon? It'll run longer than you. ? Did I make a funny?
Wait... You aren't Homer? Have you been cryogenically frozen for 20 years? It isn't the 90's anymore. Nobody brings up Simpsons references anymore.
It could be a heart condition or your just out of shape.. Best thing really is to check it with your doctor cause they truly know especially since you can only run for so little make sure to drink water at least everyday and make an appointment for a check up