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.
When your babyâs having a growth spurt, she may need more or less sleep than usual (Lampl and Johnson 2011). There's some research to show that babies going through growth spurts become clingy, fussy and unsettled (van de Rijt and Plooij 2010), and this can disrupt naptimes and night-times.