Context of the question: storing sperm in cryobanks. I read the following comment:
I could find the relevant citations when I have some time, but I seem to remember some research findings that show that sperm quality is better when ejaculated outside a lab building which is curious. This could account for wishing sperm samples to be brought in from home, but mailing the sample would in my mind affect quality more. Interesting question. – Chris Rogers 13 hours ago
Is the quality of sperm higher when ejaculated outside a lab building than when inside one?
I couldn't find studies on it. I imagine that if there is indeed a difference in quality this could be due to some psychological factors, so I find the statement plausible.