I know about semen retention. Some youtubers I watch are testing it with all biometric/blood works being tested. In specifically the correlation to gaining muscle and the mood changes. Especially while on anabolics.

I have a sense of what it does spiritually too. Dont want to be spilling your life force out for no reason. I get it.

But not once in the photo did it say anything about retaining semen in the practice you are talking about. He retained semen in a cup to inject. But it's not the same :D