Including having your wife on call- except, of course, when she's on the bench:
If Anna has been adhering to her mother-in-law Michelle's top marriage tip, she will have said 'yes' to sex whenever her husband has wished to have it - regardless of how tired she may have been.
'Be available. Anyone can fix him lunch, but only one person can meet that physical need of love that he has,' Michelle, 49, told TODAY Moms in an interview last year, citing a friend's advice.
'You always need to be available when he calls.'
Both Michelle and Jim Bob said the advice has been a 'lifesaver' in their 31-year marriage.
However, the couple added that there are times when they have chosen to abstain from sex.
They did not get intimate in the 80 days after Michelle gave birth to each of her nine daughters. And they abstained from sex for 40 days following each of their 10 sons' deliveries, it is reported.
The parents of 19 also do not engage in sexual activity when Michelle is on her period.
These sex-less stretches, which are 'loosely based on Old Testament traditions', are beneficial to Michelle and Jim Bob's marriage and make them 'look forward to [sex] even more', Michelle said.
So, if Anna and Josh have been following the couple's advice, they will have abstained from sex for 80 days in 2009 after the birth of their daughter, Mackynzie Renée, and for two 40-day periods following the deliveries of their sons, Michael James and Marcus Anthony, in 2011 and 2013.
They will also be currently abstaining from a physical relationship after welcoming their fourth child, Meredith Grace, into the world on July 19, amid controversy over Josh's molestation scandal.
Data released by the hackers allegedly lists Josh's full name and address and says he was looking for 'conventional sex, experimenting with sex toys, one-night stands, sharing fantasies, sex talk'.
One of the father of four's accounts was reportedly closed around the same time that it was first reported that he had molested four of his nine sisters - and a babysitter - as a teenager.