Substance use disorder occurs when a person needs alcohol or another substance (drug) to function normally. Abruptly stopping the substance leads to withdrawal symptoms. Addiction means that a person has a strong urge to use the substance and cannot stop, even if they want to.
So it is important to maintain positive nitrogen balance in the body while sleeping. When you do and conditions are right so that your rate of protein synthesis exceeds your rate of degradation, and you maintain a positive nitrogen balance, you can grow while you sleep.
Let Naps Play Out Naturally. Susan Zafarlotfi, clinical director of the Institute for Sleep and Wake Disorders at the Hackensack University Medical Center in New Jersey, says, Infants sleep 16 to 20 hours per day.