Teaching.
The Golden Week holiday brought a 5-day break from teaching. That's why I really enjoyed last Thursday-it allowed/let me get back 'into the swing of things'. I always find that even if I have just a few days away from my job,I start to lose my 'edge'. That's chiefly why the spring,summer and winter holidays are too long for me:from a (strictly) teaching point of view I lose my sharpness.