I’m the same way. Drink coffee daily because I like it for breakfast. And I love espresso with dessert after dinner. When I’m away I typically consume 0 caffein

I’m the same way. Drink coffee daily because I like it for breakfast. And I love espresso with dessert after dinner. When I’m away I typically consume 0 caffeine for 1-2 weeks and have no noticeable downsides. If anything I get less sleep but am more active on vacation because I’m doing more. I suspect I’m a fast metabolizer but no way to know really.