When evening falls and the streets are lit up with holiday lights, it seems as if the world has stopped for a moment. Christmas lights are not just a decoration – they are a symbol of warmth, nostalgia and homeliness. But when we turn off the lights in our apartment and go to bed, many people wonder: is it wise to leave Christmas lights on all night? The answer from experts is reassuring, but at the same time clear: a little caution is never a bad thing.