- Like you said, going for a walk (activates beneficial genes, helps circadian rhythm)
- Stop caffeine as soon and often as you can. Sometimes situations force me to use a pick-me-up, but I try and stop the day after.
- Go to bed early (10PM ideally)
- Vitamin D, Magnesium, etc. also check out near infrared therapy to improve mitochondrial function
- Moderate exercise (overtraining has a bad net effect on nearly everything, so stop if working out makes you feel worse; if you have a heart rate variability monitor, you can use that as a metric for overtraining)
- Small talk (works for me to „wake the brain up“)
But really, 90% of the time I just have to sleep more. The others are just hacks to keep me going if I can’t get enough sleep (sometimes not easy with 2 kids).