The duration of sperm survival outside the body can be affected by a variety of factors, such as ambient temperature, humidity, and the quality of the sperm itself. In a room temperature environment, sperm can generally survive for about 45 minutes, up to 24 hours, and the number of dead sperm gradually increases over the 24-hour period as time increases. For drier environments, sperm can survive for minutes to tens of minutes. Ultra-low temperature sperm freezing technology allows sperm to survive significantly longer, with the longest record of frozen sperm surviving for up to 21 years. Sperm can be put into a dormant state by freezing, and then thawed if needed for the purpose of reusing sperm. The survival time of sperm in the woman’s body is extended to 2-3 days.