For questions about hit points, an abstraction of a character's health, used in many role-playing games. (See also: the [temporary-hit-points] and [hit-dice] tags.)
Hit points (HP) are an abstraction of a character's health, used in many role-playing games. Damage suffered is typically subtracted from hit points, and healing (whether magical or nonmagical) can often restore hit points up to the original maximum. Depending on the RPG, characters may have a fixed amount of hit points derived from their statistics, or may increase their hit point maximum as they advance.
Hit points are common to many RPGs. They were the first health abstraction "design technology" to appear in an RPG system with the publication of Dungeons & Dragons (1974). An RPG may use hit points to represent a character's overall health, or it may give characters multiple pools representing different aspects. Hit points may be the only measure of health and injury, or may be combined with systems for wounds, debilities, effects based on the amount of HP, or other permutations on the basic theme.