@duncanhemingway
Girls don't train their breasts to be hard
Muscles are soft and become hard only when you exert force. Who would exert force all the time in daily life? https://imagedelivery.net/BXluQx4ige9GuW0Ia56BHw/1c55d7b5-27d7-4082-35bc-8217eee1c800/original