Re: What exactly is Regeneration like to the Doctor?
It's been seemingly portrayed as very painful and/or stressful in the new series.
He was usually unconscious (or close to it) in the classic series.
#2 was very much awake & alert and he looked uncomfortable with the process at least. His was a forced regeneration though.
Rimmer, on what period of history to live in-
“Well, It’d be the 19th century for me, one of Napoleon’s marshals.
The chance to march across Europe with the greatest general of all time and kill Belgians” - (White Hole).