There are times of the month when I am friskier than usual. I know there is a medical/physiological explanation for this, but let's skip the boring science and talk about when that happens for you ladies and gentlemen.
I spike for about a week about half way through my cycle. That would be NOW. LOL.
Many women are on medication which alters their hormones and cycles. However, that doesn't mean that they don't have specific days or times they are more frisky than others.
Men, I honestly don't know a damn thing about your physiology except the "how-to" stuff
Are there any cycles that your particular bodies seems to follow? Perhaps you have a job with a monthly deadline and you are exhausted and uninterested in the days approaching it? I don't know, but I thought I'd throw that out there as a possible scenario.
Tell me how your bodies work around the calendar. I'm curious!