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.
Experts tend to agree that some sleep changes are normal as we age, but that doesn't mean you should chalk up all sleep problems to growing older. If you or your loved ones aren't resting as easily as in previous years, here are a few points to consider. Sleep patterns do change as we get older.