Answer:
Hi there~
A one day experience of a doctor would probably be very hard. Doctors have to make sure patients are healthy and in good shape before they can live on their own; it isn't the most easiest job in the world.
Being a doctor requires you to work in a MED hospital for 10 years and in those 10 years you would have to keep studying the genetics of the human body and how to fix that problem in the body, etc.
Hope this helps
Sky