Worshipping God is the great essential of fitness. If you have not been worshipping. . . when you get to work you will not only be useless yourself, but a tremendous hindrance to those who are associated with you.
I love mixing humor and terror, or humor and exhaustion, or even humor and despair. I'm dealing right now with a loved one with cancer, and she's of course sad, but also telling the most disturbingly morbid jokes and puns. I love that, there's so much humanity in being able to mock fate and hardship.