Nurse

A nurse @ can attack you in melee. However, if you are wearing no armor and wielding no weapon, the nurse will heal you. If you are fully healed, some hits from the nurse could raise your maximum HP.

If you encounter a nurse, and there are no other dangerous monsters nearby, the easiest way to strip yourself is to press [A] and select all of your armor, plus your wielded weapon, for removal. Then you can let the nurse start healing.

If you let many nurses heal you, for example by reverse-genociding nurses, then you are nurse dancing.