Sperm preservation is a medical process that involves freezing and storing sperm for future use. This technique is often used by men who want to father children later in life, those undergoing medical treatments that may affect fertility, or individuals with certain health conditions. The sperm is collected, analyzed, and then frozen in liquid nitrogen to maintain its viability. The preserved sperm can be thawed and used in various fertility treatments, such as in vitro fertilization (IVF) or artificial insemination. This process allows individuals to have children even if they face challenges related to fertility or time constraints.