Anywhere you go in Paris, you are most likely to see large number of people gorging on all kinds of treats. Due to the fierce competition, the city now offers incredibly high quality products for meagre pocket change, so it gets almost impossible to resist. But you’ll also see that people walk a lot, are out and about for the most of the day. Because of that, they can justify the guilty pleasure of loading up on sweets.
After all, as I’ve already noted, in Paris one quickly loses any interest or inclination toward snacking while vegetating in front of a TV, so the justification is fully, well… justified.