Does any glymphatic clearance occur during NSDR? How do the brain signals in NSDR differ from what happens during a nap of equal duration? I often feel more awake after an NSDR session than I do after napping and am trying to understand what’s happening.
1. Thank you for the fantastic podcast. I have improved many things in my life because of it. You have mentioned consuming fermented foods on several episodes, but Layne Norton seemed to point to prebiotic dietary fiber as the best and perhaps only evidence-based tool for microbiome improvement. Is there any science that suggests kimchi, yogurt, etc., actually improves the flora? 2. For someone whose diet does not include enough fiber, what would be the best fiber supplement specifically for microbiome health? Psyllium seems to have a lot of positive benefits, but I read it's resistant to fermentation.