Swords and Wizardry: Recoveries or Healing Without A Cleric

I saw someone asking about Second Wind and replacing Divine Healing in SnW and decided to work something up.

This rule takes more from 13th Age than DnD 4E or 5E.

Each character starts with 1 Recovery per day. When a Recovery is spent, the character rolls it's hit dice and heals that amount.

During combat, spending a Recovery is an action.

As an optional rule, Fighters may start with 2 Recoveries per day.