@aeva it's real for me though, yes, completely unclear how. traditionally i have a winter trough that starts around now and ends somewhere in february, but we do walks, vitamin D, and *mumbles* recreational stuff, so i like to think i have a better handle on it.
but also, i consider it an evolutionary trait that used to be of benefit: when days get shorter, retreat, spend less energy, avoid other people, get sick less, etc. there's tons of benefits at the small cost of... deep misery