Despite the plethora of sex videos and DIY tomes on the art of conceiving, some couples face huge problems when it comes to having babies.
Now an enterprising hospital in China has introduced its "second nuptial chamber" to aid those affected.
Each room in the Songziniao hospital in Wuhan, Hubei province, comprises 538 square feet of matrimonial bliss - red lamps, sex toys, automatically adjustable double bed and diagrams.
Sex-skill videos, nurse and air hostess uniforms are available on request.
Huazhong Normal University sex professor Peng Xiaohui highlighted the magnitude of the problem.
He once treated a couple who failed to conceive after three years of marriage. The reason - the husband had mistaken his wife's belly button for her privates.
A session in the nuptial chamber does not come cheap - couples will have to fork out 880 yuan (HK$1,093) per night.