Coffee and climbing go together like ice-cream and summer. - Can't have one without the other.
A favorite quote of Wolfgang Güllich translates roughly to:
"One does not get a coffee after climbing, drinking coffee is an integral part of climbing."
„Man geht nicht nach dem Klettern zum Kaffeetrinken, Kaffeetrinken ist integraler Bestandteil des Kletterns.“
– Wolfgang Güllich
I haven't seen that quote before, but I love it! I remember reading somewhere that having a bit of caffeine before climbing is actually a good idea for some reason. I'll see if I can find it and report back.
Please do so. I am very curious.
I believe it was this article from Rock & Ice:
The Truth About Caffeine and Climbing