The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Rather, if they're having intercourse with ejaculation once or twice on the day prior to ovulation and then a maximal number of times with ejaculation on the day of ovulation, that itself can maximize the probability of fertilization.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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So what this involves generally and what the typical recommendation is is to abstain from intercourse with ejaculation about two or three days out from ovulation and then, on the day prior to ovulation and on the day of ovulation, to essentially introduce as much semen and ejaculate into the reproductive pathway of the female as possible.
It turns out that's not the optimal strategy. The optimal strategy is really to maximize the concentration of healthy sperm within each ejaculate and to really center that around the day of ovulation.