Still experimenting with about ~20mg of coffee every other day. Great as part of my pre-workout (as indicated by Huberman's podcast) especially with fats. If I don't add the fats, I definitely feel the edginess and jitteriness...
I don't really need it though, wondering if I'm better off just avoiding it? Heard of many other longevity and neural benefits... something I was expecting in this pretty empty study. Self-experimenting continues...