Isn't it obvious?

Your mind has limited capacity for diffucult mental work. After you have used it all, you need time to restore yourself.

You can use several strategies:

  * Smooth it out: work less on a productive day so you can work more on an unproductive day
  * Improve your capacity for work: diet, sleep, exercise. there is a bazilion things written on the topic, find what works for you.
  * Adapt work to your capability. If you have unproductive day, do unproductive things. For example, you can attend meetings, write emails, or take the day off entirely and do something physical.

There is not much else that could be done, you can over extend yourself so you could become sick or burn out. But I don't think that it is best for you in the long term

Love, Emma

Edit: formatting, I am new to the editor on this site