anesthesia
"I'm 53, I was given propofol for a preventive colonoscopy screening intravenously and within 10 seconds I was out. When I woke up fifteen minutes later I felt like I was waking up from a restful nap.  Within 15 minutes I was up, dressed, and out the door. I felt great the rest of the day. I might add I'm in good health and physically fit."