I tend to have this cadence in the way I feel. It appears I have a good day and then the next day I feel a bit meh. Well, I don't go from +10 (one day) to -10 (the next/on a scale -10 ~ +10).. no.. luckily I don't.. but say from +2 to -2. I haven't found a good explanation for this.. might be I ask a bit too much on the good and pay for it the next. Dunno..
Oh, and it's not a given.
On that scale I'd say I'm about -2 at present. Meh..
*claps hands hard a couple of times* (=common' luutje)