Embryo freezing, also known as cryopreservation, is a process used in assisted reproductive technology to preserve embryos for future use. After fertilization, embryos can be frozen at very low temperatures, allowing them to be stored for years without losing viability. This technique is often used by individuals or couples undergoing in vitro fertilization (IVF) to increase their chances of pregnancy later on. The freezing process involves carefully cooling the embryos and using special solutions to protect them from damage. When needed, the embryos can be thawed and implanted into the uterus, offering a chance for pregnancy without the need for immediate fertilization. This method provides flexibility and options for family planning.