If you suffer from insomnia then you understand the seriousness of simply not getting a good night's sleep. Your whole world around you appears to crumble when you can't get a good 6-8 hours of quality deep REM sleep. Your work life, your family life all suffer.
If you are unknowingly deficient in chromium, vanadium, manganese, and other nutrients you can experience hypoglycemia rebound in a few hours where you abruptly wake up and are unable to drift back to sleep.