I've always thought that the key to a good sex life is variety. That's why God gave me two hands. Humans love sex, we need sex, it's how we connect, it reminds us we're alive, it's the third most basic human need, after food and good movie popcorn.
As iron cast into fire loses its rust and becomes glowing white, so he who turns completely to God is stripped of his sluggishness and changed into a new man.