Butter will keep for a long time refrigerated. Up to 6 weeks. You can also freeze this product and it will keep for over a year.   Hi - I only accessed this question as I hâ¦ave just tried some butter I had in the fridge. It is now Sunday 14th June 2009.
Sperm can be stored inside the male body for approximately 3 weeks after they've matured, after which they die inside the body if not ejaculated. So the entire sperm life cycle inside a man's body if not ejaculated (10 week maturation time + 3 week storage lifespan) is approximately 13 weeks or about 3 months.
Sperm cells begin to develop when boys go through puberty and they continue to produce sperm well into old age. The process begins with the primary spermatocyte within the testes. Sperm cells move from the testes to the epididymis, which is a coiled long thin tube, where they complete their development and are stored.