What do you do when you feel crap?

Today, everyone at work had to stay back for three (unpaid) hours after we’d already had quite the hectic day. I’m exhausted, sick (Jack cooked and maintains that the minced beef was probably cooked through) and we’ve no heating in the house so it feels like we’re suffering through a mini ice age. (We have had fun reenacting scenes from the end of Titanic though.)
When I feel sorry for myself like this, I grab my laptop, put on a feel good film (or one of my favourites), climb into bed and try to forget the day’s troubles.
What do you do?