I was wondering what the differences were between various brands/types of coffee.
Asking because when I drink some coffee brands - they don't seem to give me a boost of energy, but some specific brands really do. I think that this is due to not only the caffeine, but possibly the other chemical constituents found in the coffee.
I also have to mention, that according to 23andme, I am fast coffee metabolizer.
What do you think? What is your experience?