This reminds me of that Seinfeld:
Bania: I start off with curls. That's good for the bicep. I do 10 reps, 2 sets.
Jerry: Mm. That's fantastic.
Bania: You work out with weights?
Jerry: No, I don't.
Bania: You should.
Bania: (broad smile of enthusiasm turns into dumbfounded look)
If you're a battery, you're either working or you're dead....