Mengapa testis saya mempunyai kehidupan mereka sendiri?

• 00:06
• 00:24
• 00:42
• 01:01
• 01:19
• 01:37
• 01:56
• 02:14
• 02:33
• 02:51
• 03:09
• 03:28
• 03:46
• 04:04
• 04:23
• 04:41

Does anyone know why it happens that the testicles rise and fall in size when they are in a normal state? It's amazing how our current body in natural circumstances, well I guess it's things that happen.

• 470
• 05:06