Phew, guys, let's all take a deep breath. It wasn't an overdose or wild coke bender that sent Charlie Sheen to the hospital. The poor guy has a hernia!

TMZ reports that it was a hernia that triggered those "severe abdominal pains" that landed Charlie in the hospital. Sources say the hernia "causes acid and food to back up into the esophagus. ... We're told it causes 'horrible, horrendous pain.'"

Still, TMZ claims that the the actor smoked cocaine and critiqued porn during the 36-hour party bender that landed him in the hospital. Their sources say Charlie was indeed doing drugs for hours, partying with porn stars and critiquing the finer art of adult films prior to the 911 call leading to his hospitalization.