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.
You need to sleep eight to 10 hours continuously to cycle through these stages three to four times. Every time you cycle the length of the REM sleep increases while the deep NREM decreases until you have a good 30 minutes in dream sleep without any deep sleep occurring, that is considered healthy sleep.