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.
Your body uses most of the night (except when you are in REM sleep) to heal damage done to your cells and tissues when you are awake and more metabolically active. At the start of the night and during slow wave sleep, your body also releases growth hormone. Lack of sleep, on the other hand, is linked to muscle atrophy.