Hit Point

Hit Points (HP for short) are a measure of an Adept's health used in the Golden Sun series. These are incredibly important because when an Adept's HP reaches zero the Adept is downed and can no longer participate in the battle or receive experience points after battle. The number of HP an Adept has depends on class and level, among other things. The max HP an Adept can have is 1,999. Classes that have high bonuses include:
 * The Ronin class, a member of the Samurai class series, has the highest increase at 210%.
 * The Chaos Lord, Paladin, and Master all have an increase of 200%.
 * The Hero, Protector, Radiant, War Adept (from both the Page class series and the Apprentice class series), Admiral, Acrobat, and Beast Lord all get an increase of 190%.

The most common way to increase health is by leveling up, although certain equipment can raise HP, and all Djinn, when set, will raise HP by various amounts. Another way to increase health is through the use of Power Bread.

Recovering HP
During battle there many ways to recover HP. The first way is through items, and early in the game this may be the most viable route. The items that can be used to restore health are: Additionally, some items have "use" effects that restore health: Finally, some weapons' Unleash effects restore health:
 * Herb (50 HP)
 * Corn (100 HP)
 * Nut (200 HP)
 * Vial (500 HP)
 * Hermes' Water (All HP)
 * Potion (All HP)
 * Mist Potion (300 HP to all party members)
 * Blessed Mace
 * Clotho's Distaff
 * Earth Shield
 * Faery Vest
 * Healing Ring
 * Nurse's Cap
 * Virtuous Armlet
 * Angelic Ankh
 * Apollo's Axe
 * Dracomace
 * Mystery Blade
 * Rising Mace
 * Tartarus Axe

Also some Djinn can restore health. They are:
 * Breath
 * Crystal
 * Fizz
 * Sap
 * Spring
 * Spritz
 * Steel

A few summons can restore health:
 * Coatlicue
 * Iris

The final way is through Psynergy. The Psynergy spells that restore health are:
 * Aura Psynergy series
 * Cure Psynergy series
 * Drain
 * Elder Wood Psynergy set
 * Manticore
 * Pixie Psynergy set
 * Ply Psynergy series
 * Succubus
 * Wish Psynergy series

Most of the Psynergy that can be used to restore health can also be used in the field to restore health outside of battle.

HP and Enemies
Like Adepts, all enemies have HP as well, and similarly affect the battle. Like Adpets, when an enemy's HP reaches zero it is no longer able to battle and is felled. The max HP for an enemy is 16,383, which none of the enemies have in the default difficulty level. This HP cap is achieved only in the Hard Mode where all enemies get 1.5x the amount of HP: Both Valukar and Dullahan, two optional bosses, reach this maximum.