9:56am PDT - April 22nd, 2022

The optimum temperature for human testicles, for sperm production, is 93.2 degrees F-- that's about five degrees _below_ the body's temperature of 98.6 degrees. That's why they're on the outside of the body. https://t.co/c3iOfaZr8o

0 retweets   0 likes  - Brian Siano (@BrianSiano)