Jeremiah 6:16 |Thus saith the Lord, Stand ye in the ways, and see, and ask for the old paths, where is the good way, and walk therein, and ye shall find rest for your souls. But they said, We will not walk therein.
Truth, the cleaner/more free of toxins your body is the less sleep needed. Very noticable when fasting for extended periods of time.
The level of toxins and obstruction in the body is in large part due to what you eat and what you think/emotions.