Sperm cryopreservation is a process that involves freezing sperm cells to preserve them for future use. This technique is commonly used in fertility treatments, allowing individuals or couples to store sperm for later insemination or in vitro fertilization. The freezing process helps maintain the viability of sperm, enabling successful pregnancies even after long periods of storage. The procedure typically involves collecting a sperm sample, which is then mixed with a cryoprotectant to prevent ice crystal formation. The sample is gradually cooled and stored in liquid nitrogen at temperatures around -196°C. This method is essential for men undergoing medical treatments that may affect fertility, such as chemotherapy, or for those who wish to delay parenthood.