So I've been talking to a few people about this and have realised its a much more widespread phenomenon than I'd realised. Its no coincidence that a lot of emo bands have words like 'Autumn' and 'Novemeber' in the title.

Does anybody else notice a distinct and rather sharp change in their general mood around the time the clocks change back to GMT?

The last couple of weeks I've been feeling lethargic, humourless, moody and at points kind of nervous and upset.

I've found its even changed the type of music I feel like listening to. I went from listening to a lot of folk, to needing something more intense, like post rock or hardcore, to elicit the same level of emotional response.

Seasonal affective disorder is obviously a well documented phenomenon. Neurotransmitters like serotonin are synthesised using vitamin D from sunlight, so reduced exposure, at least to some degree, changes the way your brain operates.

Especially in very seasonal, mid-latitudes this is a well documented phenomenon. 20% of Swedes apparently suffer from full blown SAD. Humans originally evolved in an equatorial African context, so I guess we haven't necessarily adjusted perfectly to seasonal climates.

For me this seems to have correllated pretty directly with the clocks changing. It seems like that jolt of an hour (and decreasing) less sunlight a day can be enough to make quite a marked difference for a lot more people than those actually suffering for SAD or depression.

Your thoughts, oh citizens of internet land....