Break
A Break is a period of roughly 5 minutes.
Little things that take more time than an Action require a break to do. They are primarily used to track time when Delving. When there is no time pressure, breaks can be taken at will.
Generally, all the PCs take a break together, but they may do different things during that break.
You cannot take a break while in Combat.
Recover
If a PC does nothing but rest during a break, they regain a Quarter of their Max HP.