5th ed D&D needs a Cantrip focused class.

[Anthony]

Originally Posted by Anaraxes

A short rest is at least one hour long (per the PHB). So it's not physically impossible to take more than 12, but the party isn't going to accomplish much if they insist on short-resting after every fight.

Also, you need 12 encounters that are separated by enough that you can take a short rest without the other encounter areas don't come to check what the fuss is about, but not so separated that you just wind up taking one or more long rests. My experience in games is that you need to break contact with any enemies for a short rest to be practical, which for a dungeon probably means you've left and aren't actually going back before you've finished a long rest; mostly, short rests are after dealing with wandering monsters, or after finishing a major fight/dungeon raid and you take a short rest so if wandering monsters attack you while you're trying to take a long rest you don't die. Either way, that's about one short rest per day.