Pet Peeve: They finally published the 5E Sleeping in Armor Rules.

In the new book (Xanathar's Guide, which Mikey ordered), they finally published the rules for sleeping in armor:

Sleeping in Light Armor has no adverse effect on the wearer, but sleeping in Medium or Heavy Armor makes it difficult to recover fully during a long rest.

When you finish a long rest during which you slept in medium or heavy armor, you regain only one quarter of your spent hit dice (minimum of one die).  If you have any levels of exhaustion, the rest doesn't reduce your exhaustion level.



More advantages for Elfa house!  Cheating non-sleeping bastards.