Health is a blessing of which few appreciate the value; yet upon it the efficiency of our mental and physical powers largely depends. Our impulses and passions have their seat in the body, and it must be kept in the best condition physically and under the most spiritual influences in order that our talents may be put to the highest use. Anything that lessens physical strength enfeebles the mind, and makes it less capable of discriminating between right and wrong.
(MYP 235.1)
The misuse of our physical powers shortens the time in which our lives can be used for the glory of God, and it unfits us to accomplish the work God has given us to do. By allowing ourselves to form wrong habits, by keeping late hours, by gratifying appetite at the expense of health, we lay the foundation for feebleness....
(MYP 235.2)
Those who thus shorten their lives and unfit themselves for service by disregarding nature’s laws, are guilty of robbery toward God. And they are robbing their fellow men also. The opportunity of blessing others, the very work for which God sent them into the world, has by their own course of action been cut short. And they have unfitted themselves to do even that which in a briefer period of time they might have accomplished. The Lord holds us guilty when by our injurious habits we thus deprive the world of good.—The Review and Herald, June 20, 1912.
(MYP 235.3)