I'd argue against that. If you offer someone a choice between a suduko puzzle or a solidly difficult workout before they're allowed to get one with their evenin

I'd argue against that. If you offer someone a choice between a suduko puzzle or a solidly difficult workout before they're allowed to get one with their evening, I'd guess most people would choose the puzzle. Drumming up the mental fortitude to force yourself to do something difficult is a cognitive challenge.