I truly believe the winter holidays are the most ‘warm’ and ‘appreciative’ because the latter half of the year = serotonin heavy, the summer = dopamine heavy.

Just like the day is for developing, the night for recovering, it seems that the summer is the same ‘inverse’ to the winter, a year seems to be a ‘day’ oscillating at a higher scale, carrying with it a relatively longer ‘release schedule’ from a single day.