Postdoctoral research is a stage of academic training that occurs after earning a PhD. It allows researchers to deepen their expertise in a specific area, often working on advanced projects under the guidance of experienced mentors. This period typically lasts from one to several years and helps scholars develop their skills, publish their findings, and build professional networks. During this time, postdoctoral researchers may focus on various fields, such as biology, engineering, or social sciences. They often collaborate with other scientists, contribute to ongoing research, and may even teach or supervise students, all while preparing for future academic or industry positions.