It’s normal to have lower energy on the darkest days.
We are in the thick of some of the darkest days of the year. In Minneapolis, where I live, sunset will be at 4:31pm this afternoon. If we’re lucky, that means we will have 8 hours and 56 minutes of sunlight. That’s over 6 hours shorter than it was 6 months ago. Our human bodies are organized around a ~24 hour day. That means a quarter of our day and almost half of my waking hours have shifted from light to dark. No wonder my body feels more lethargic. That I just want to curl up and eat warming foods. No wonder it’s harder to be as productive.
Our society wants us to treat each day the same. To expect the same productivity, the same results. But that’s not normal. It is normal to behave differently when the circumstances are different. And darkness definitely qualifies as a circumstance.