Cryonics is the practice of preserving individuals who have died from what is currently considered an incurable condition, with the hope that future medical advancements may allow for revival. This process involves cooling the body to very low temperatures to prevent cell damage and decay. The procedure typically begins shortly after legal death is declared, using a cryoprotectant to replace bodily fluids and minimize ice formation. Organizations that offer cryonics services, such as the Alcor Life Extension Foundation, aim to maintain the integrity of the preserved body until technology advances enough to potentially restore life.