The incorrupt saints are Catholic holy figures whose bodies are believed to resist normal decomposition after death, sometimes for centuries. One mystery is that many of these bodies show little or no embalming, yet remain unusually preserved under ordinary burial conditions. Some cases, like Saint Bernadette Soubirous, are carefully documented and periodically examined by the Church. Scientists often point to environmental factors, while believers see it as a sign of divine favor and sanctity. The phenomenon remains unexplained in many instances, blending faith, history, and scientific curiosity.