Health And Fitness

"And all saints who remember to keep and walk in obedience to the [Word of Wisdom] ... shall recieve health in their naval and marrow to their bones; and shall find wisdom and great treasures of knowledge, even hidden treasures; and shall run and not be weary, and shall walk and not faint. and I, the Lord, give unto them a promise, that the destroying angel shall pass by them, as the children of Israel, and Not slay them. Amen."

Doctrine and Covenants 89:18-21