I chose to fact check the claim: "Constant cloudy weather causes major shifts in mood swings." Many people claim that their constant mood shifts is due to the weather. As someone who just moved from a constantly sunny place to a predominantly cloudy place I've noticed the lack of motivation people feel when it is cloudy. I've also noticed that people tend to travel to the sunny warm places during the right seasons like the summer to be happy. Tourists are almost never not happy when they are in a sunny warm place. When the weather is cloudy, i find many people have been found to be lazier, and less motivated to go out and do stuff. Tests have shown that low amounts of sunlight can trigger a reduction in serotonin which affects your mood. I was very curious mostly on whether this depends on the person and where they were raised... or if everyone experiences mood shifts with the weather such as cloudiness?