The dopaminergic response from caffeine is so strong that it reinforces the behavior in a way that is very difficult for humans to change. I worry that when people are drinking coffee or caffeinated beverages of any type within 12 hours of their sleep, they're still having at least 25% of the caffeine in their body physiologically. And if you stop doing it, life is worse. That was actually, Dave is not drinking coffee on this podcast because that would be incongruous.

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