Fertilization & Orgasm

https://youtube.com/shorts/IkOP_vJS6c8?si=XYZMxeUgSi2pZBTA

Male orgasm explanation 

https://youtu.be/B3GRJGV9YNQ

Female orgasm explanation 

https://youtu.be/XB4S_e_sgUA

https://youtu.be/WDetHC86Dgo

Sex under MRI

https://youtu.be/LcvGAGUge5M

Coitus by ultrasonography 

https://youtu.be/rACReNJZHCg

Fertilization 

https://youtu.be/Vv9Kj3XIAbU

https://youtu.be/GdQBe2Efl9w

https://youtu.be/URUJD5NEXC8

https://youtu.be/4l9GE_eaMSs

https://youtu.be/izOa3-AX8zQ

https://youtu.be/42WIByexiXc

When periods start and stop?

https://youtube.com/shorts/Li4r1BmKgwo?feature=share