what is constitution in dnd

In Dungeons & Dragons, Constitution is a measure of a characters physical resilience, stamina, and vital force. It encompasses the characters physique, toughness, health, and resistance to disease and poison. Constitution is important for determining a characters hit points, healing surges, and saving throws. All characters gain additional hit points from Constitution, so most player characters have at least moderately high Constitution. Constitution is also important for resisting certain spells, poisons, diseases, and environmental effects. There are no skills tied to Constitution.