The first it’s usually a paid job to gain experience for school
This could be a case of Obsessive-Compulsive Disorder (OCD) considering people with this condition have the urge to do certain things repeatedly as a way of banishing the scary thoughts or making sure they are safe or even clean.
The circadian clock is most sensitive to light from about 2 hours before usual bedtime and through the night, until about 1 hour after usual wake-up in the morning (this is the sensitive period). Exposure to light during these times will affect when your body naturally gets sleepy and is ready to fall asleep.
The muscle would be B. shrunken