It’s not related to diet and exercise, although learning this will require vigorous training and life-long practice.
“My son, pay attention to my wisdom… For the lips of the adulterous woman drip honey, and her speech is smoother than oil. But in the end she is bitter as gall, sharp as a double-edged sword. Her feet go down to death; her steps lead straight to the grave. She gives no thought to the way of life; her paths wander aimlessly, but she does not know it” (Proverbs 5:1-6 NIV).

Pay attention and “keep to a path far from her, do not go near the door of her house” (verse 8). If I’m tempted to become entangled with a lying, unfaithful person, I must take a sharp detour the other way. Otherwise, according to these proverbs, I’m on a straight path to my death.
“At the end of your life you will grown, when your flesh and body are spent. You will say, ‘How I hated discipline! How my heart spurned correction’… For lack of discipline they will die, led astray by their own great folly” (verses 11-12 and 23).
My prayer is “Lord, remind me to always place a high value on truth, faithfulness and discipline, so I don’t take a shortcut to death. Thank you for teaching me your ways!”
by Kathy Sheldon Davis