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.
Last updated: Jan 28, 2015. Due to the dynamics of sleep and exercise it is possible for your muscles to grow while you sleep! If you do it right, you can make maximum use of that beauty sleep to grow muscle, repair and rejuvenate the body and mind, and lose body fat.