Wind of Health is an Exploration technique that points the Guiding Wind at Hot Springs. Bathing in each spring raises your maximum health, so this is a direct way to make Jin tougher.
You set the Guiding Wind's target from the map screen, then follow the breeze. It saves you waiting for a Golden Songbird to lead you.
Max health matters in every fight, and springs can be easy to miss. This finds them for you one by one.
Wind of Charms
The Guiding Wind leads you to Shinto Shrines, where new Charms wait.
Wind of Concentration
The Guiding Wind leads you to Archery Challenges on Iki Island.
Wind of Harmony
The Guiding Wind leads you to Animal Sanctuaries on Iki Island.
Wind of Inari
The Guiding Wind leads you to Fox Dens; the foxes take you to Inari Shrines for more Charm slots and upgradeable Charms.