I struggle to get past the 16-18hour mark. I want to work my way up to 48hrs (gradually of course). I work a physical job and I do grappling. Problem is I end up with headaches, brain fog, and dizziness. Any advice is appreciated!
For some people, the headaches and related issues can be improved with more salt and electrolytes. Add a cup of miso soup to your meals, add a magnesium supplement, make sure you’re getting extra potassium from food. Green tea can give you caffeine and l theanine to aid in mental clarity.
I second the comment on potassium and Theanine. I also recently incorporated Jasmine tea into my diet and it really helps me. There is a great clarity, a nice stimulation, but I don’t drink it past early evening, or it revs me up a little.