Can sperm develop at body temperature 37 degrees Celsius?
Similarly, does sperm have to be a certain temperature?
Sperm thrive in lower temperatures. Ideally, they should only be exposed to 4° F below body temp (roughly 94°) or cooler. This means that even small sources of heat can start to add up and damage your sperm count.
Accordingly, how does temperature affect sperm?
Sperm are produced by a man's testicles (commonly called balls). The cremaster muscle contracts to pull the testicles closer to the body if they start to get too cold, and it relaxes to push them farther from the body to cool off if they get too warm. Prolonged exposure to a warmer temperature will make sperm die.
This elevation in temperature activates sperm, temporarily enabling them to increase their motility to go through the cervix and reach the fallopian tubes. The lower temperature in the descended testicles serve to prevent the premature activation of sperm by keeping testicular temperatures below body temperature.