Matthew Perry detailed the terrifying moment he 'smashed his head into a cement wall' until he was 'covered in blood' during a scary rehab breakdown.
The Friends star has recently opened up about his battle with drink and drugs addiction, revealing some horrifying life experiences.
He explains the pain and suffering he went through in his new tell-all book Friends, Lovers, and the Big Terrible Thing – detailing life in and out of rehab.
