Shortly after the Sixth Doctor's regeneration, he said that rest was for the weary. (TV: Attack of the Cybermen [+]Loading...["Attack of the Cybermen (TV story)"])
After the Toymaker was banished, the Fourteenth Doctor decided it was time for a rest while the Fifteenth Doctor continued to have adventures. (PROSE: The Doctor's Busiest Day [+]Loading...{"page":"9","1":"The Doctor's Busiest Day (short story)"})