Sex

Take pleasure in the wife of thy youth (first wife, in the case of poligamy). "Let her breasts satisfy thee at all times; and be thou ravished always with her love." Also, don't seek pleasure from strange women.
In 1982, oral sex was considered, by the first presidency, to be an unholy and impure practice, however, bishops were told not to ask about it (or any other specific practices).
Suggests that development of spontaneous ovulation in people made female orgasm relatively unnecessary, leading to a decline in the ability of women to orgasm.
Women with funnier husbands have more and stronger orgasms, initiate sex more often, and have more sex.
Farmers have the most sex, journalists have the least, and lawyers are the most likely to be faking orgasm.
For women, sexual orientation based on gender is not a good model for their arousal patterns. It turns out that women tend to prefer being dominated in the bedroom on average, and that this might be more analogous to the idea of being "straight" in men. Women who do not like to be dominated in the bedroom are a minority, and may be considered to be more analogous to "gay". Women who do not like being dominated tend to have a revulsion towards being dominated, rather analogous to the way men tend to be disgusted by the opposite sexual orientation of their own. It does not appear to be the case that women who are into being dominated are disgusted by vanilla sex, but rather, aren't much aroused by vanilla sex.
Having sex once per week decreases all-cause mortality by almost 50%. (Decreases risk of death by cancer even more.)
Having sex once per week eliminates the increased risk of mortality caused by depression.
This video does not seem to discuss more frequent rates of sex. It is not explicitly stated whether that is because more frequent sex has no effect.

Cross-References