A few months went by and Marty's addiction got worse. He could only get through about an out without having one. Something was also worrying Doc. There would be times where Marty would be doubled over, coughing his lungs out. His body was trying to force it all out but he was addicted and wasn't giving up anytime soon.
Then came the day, the day it all went wrong. Marty was helping Doc fix the DeLorean and he puffed on the cigarette and felt his arm, it was going numb, then came the pain in the heart Marty clutched his heart and shouted for help then went unconscious. Doc called an ambulance as quickly as he could. They put Marty on a stretcher and wheeled him off into an ambulance.