The (possibly apocryphal) advice given to Victorian women who weren’t fond of sex to “lie back and think of England,” may actually be useful to increase the odds of conception, at least following intra-uterine insemination (IUI).

A new study found that 27% of women who were advised to lie still for 15 minutes after insemination became pregnant and had a successful birth—compared to just 18% of those who were told to get up and move around immediately after the procedure.