Well, that was yesterday!

Conversation overheard in the kitchen earlier this afternoon:

Me: I think I gotta run.
Husband: (mocking silence)
Me: The weather is so nice.
Husband: What did you say last night?
Me: I said I was ready to take a break from running, to rest up for marathon training.
Husband: And what did I say?
Me: You said I couldn't do it.
Husband: And what did you say?
Me: I said 'Oh, yes I can.'
Husband: So, what has changed?
Me: Well, for one...that was yesterday.