Alter Aeon FAQ (Frequently Asked Questions)

FAQ 5.7 - How do I regen my hit points faster?

Sleeping is the best way to improve your hitpoint regeneration (healing.)
Resting also helps, but doesn't heal you as quickly.  Clerics may also
use healing spells or skills to heal more quickly, at the cost of mana.

You may also find items that increase your hitpoint regeneration and
allow you to heal more quickly.