Heb. 4:10 For he who has entered into his rest has himself also rested from his works, as God did from his own.

来四10因为那进入他安息的，也歇了自己的工，正如神歇了自己的工一样。

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If a well-rested, smarter and nonsmoking self is not enough, exercise has also been linked to a better sex life.

CNN: Exercise: Key to good sex, good sleep