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.
Most infants, when going through a growth spurt (usually around the ages of 7-10 days, 2-3 weeks, 4-6 weeks, 3 months, and 4 months), will nurse or want a bottle more often, and may even sleep less throughout the day.