I just looked back through posts from previous summers to see if and how often I mention sleep and energy levels through the height of summer. There are a couple of mentions.
Compared to the rest of the year it feels like it’s a different state, although without any records of my sleeping hours I can’t be sure. Regardless, there is this period during the summer when the nights are short where, on the one hand, I want to be awake, to take in all that the long days have to offer, and on the other, I slowly feel more and more drained.
Stuff that I do slowly gets paired down to the bare essentials. The things I like to do make way for the things I have to do. For example, posting here has tailed off completely for about 3 weeks. I have had things to post about but haven’t been able to muster the energy to write.
Weirdly, the running has continued. It’s really just a case of putting one foot in front of the other. I don’t need to engage my brain so much. And it helps my mood in a big way. So maybe the drain of energy is more mental than physical.