Thanks for this. I didn't have any data other than what I experienced. With coffee I just feel energized but that energy isn't directed. With good tea (the loo

Thanks for this. I didn't have any data other than what I experienced. With coffee I just feel energized but that energy isn't directed. With good tea (the loose leaf kind) I feel both energized and focused. I could never explain it but the article above might be the reason.