The Doctor was having bad dreams. He had tried to fight them off and prevent them from happing. But it seemed he just had no luck. He was breathing deeply as he slept. He looked miserable in his sleep.
He curled up and tried to relax in his sleep.
"Because it tastes good and was the first thing that tasted good when I regenrated." He passes her a cup of tea and then eats his food and drinks his own tea. He can see she looks confused.