How Long are Humans Hypersexual?

In this reality, humans remain hypersexual from the moment they reach 18/Second Puberty until the day they die. In women it decreases slightly after menopause but not by much. In fact, elderly people are a lot more healthy & spry - along with slightly lower rates of dementia & Alzheimer's - in this reality compared to ours due to non-stop horniness and near-constant sexual activity.

Fun fact: Along with Rigor Mortis is Vigor Mortis; where a man can maintain an erection - and in-turn viable sperm - for about 5 days - 2 weeks after ****!