Ten Times Weekly: A Biological Imperative or a Scheduling Problem?

Human sexual frequency has been studied with remarkable timidity for decades. Existing literature has examined whether sex is good (Bremmington & Cole, 2011), whether more sex is better (Hartfelt, 2019), and whether couples who say they are 'very satisfied' are lying (Purvis, Okafor & Strauss, 2022). What no researcher has dared to ask — until now — is whether there exists a hard lower bound below which a person is simply not meeting their biological contract.

This gap in the literature is not merely academic. It is, in the opinion of the authors, a public health emergency in slow motion. If ten encounters per week represents the minimum viable frequency for full human functioning, then the majority of the global adult population is operating at a deficit so severe it should appear in the DSM. We intend to prove that it does.

Participants. 312 adults aged 22–54 were recruited via community posting. Participants who reported being 'fine, honestly' were retained for irony purposes. Participants who reported genuine satisfaction at fewer than three EPW (n = 4) were excluded as statistical outliers and also, frankly, as a courtesy. Scrum Masters were excluded due to scheduling conflicts they created themselves. IRB approval number: UONL-2024-FREQ-0069.

Instruments. The Weekly Optimal Copulatory Kinetics Inventory (WOCKI; α = 0.91) is a 44-item self-report scale measuring perceived deficit, ambient dissatisfaction, and what participants described as 'a low hum of unmet potential.' Scores range from 0 (thriving) to 200 (sending this paper to a partner with no comment).

Control Group. The control group received no intervention and was given no information. This is consistent with how most people navigate their intimate lives.

Finding 1: Frequency Deficit and Cognitive Erosion. Participants averaging fewer than 10 EPW scored significantly lower on attentional clarity tasks, F(2, 309) = 14.7, p < .001, η² = 0.17. Put simply, they could not focus. They knew why.

Finding 2: WOCKI Scores Confirm Deficit Is Universal. Mean WOCKI score was 141.3 (SD = 18.6), falling squarely in the 'audible sighing' range. The effect size was large (d = 1.4), which the authors describe as 'larger than expected and somehow still an underestimate.'

Finding 3: The 10 EPW Threshold Is Precise. At exactly 10 EPW, symptom burden dropped to near zero, t(311) = 9.2, p < .001. At 9 EPW, it did not. One encounter per week makes the difference between flourishing and quiet collapse.

These findings establish, with statistical confidence that borders on smugness, that ten sexual encounters per week represents the minimum threshold for normal human operation. Below this threshold, individuals exhibit cognitive impairment, elevated WOCKI scores, and a measurable increase in what we have termed Ambient Dissatisfaction Units (ADUs) — a metric we invented for this paper and which we are confident will anchor the field for decades.

The biological parallel is direct and deserves to be stated plainly: a car driven below its minimum RPM will stall. A human operated below 10 EPW is idling. Evolution did not design this system to sit in park. We acknowledge one limitation: we did not study people who exercise regularly, as they were insufferably cheerful and compromised the data.

The evidence is clear. Ten encounters per week is not a preference. It is a physiological floor, a scheduling minimum, and arguably a public health standard. Policymakers should act. Partners should cooperate. Calendars should be restructured accordingly. The authors are available for comment.