Final answer:
Shamir may have an anxiety disorder and should consult with a healthcare professional for an accurate diagnosis and treatment options.
Step-by-step explanation:
Based on the symptoms described, Shamir may have an anxiety disorder. Anxiety disorders can present with physical symptoms such as sleep disturbances, irritability, and muscle tension. Restlessness, fidgeting, and an inability to sit still for long periods of time are also common in individuals with anxiety disorders.
It is important for Shamir to consult with a healthcare professional for an accurate diagnosis and appropriate treatment options. Therapy, medication, or a combination of both may be recommended to help manage the symptoms and improve Shamir's well-being.