>https://www.nature.com/articles/nm.3985
>Not practicing semen retention
They need to learn: https://www.youtube.com/channel/UCMoRRbPXjg_L1c3abHvtqVA
>https://www.nature.com/articles/nm.3985
>Not practicing semen retention
They need to learn: https://www.youtube.com/channel/UCMoRRbPXjg_L1c3abHvtqVA