Autonomic System and TCM
What most interests me here is the creation of anxiety or nervousness. It's all hidden in the Autonomic System (Sympathetic and Parasympathethic).
Parasympathetic vs. Sympathetic
Like   Yin/Yang in Traditional Chinese Medicine and   the balance we  search  for,  there is a fine balance between the   sympathetic (otherwise  known  as  “fight or flight”) which alerts the   body to emergency with   epinephrine, and parasympathetic which returns the body  to normal after a crisis. A sympathetic response includes   impulses to muscles,   heartbeat, artery  constriction, pupil dilation,   etc. A parasympathetic response reverses that and is peaceful.
When     life can be stressful, the  sympathetic system is   highlighted, alerting the body to get ready for  crisis. Yoga activates the   parasympathetic to   bring it back to balance. 
Acupuncture / TCM: Each    time I   have this procedure, I ask to have a different   aspect of myself treated    (from physical injury to overall fatigue). When treated for fatigue, the   effects are    great as the energy channels funnel throughout my entire   body. The    Nervous System is felt throughout the body and fatigue   aggravates it for    me on both subtle and physical levels. It can be   activated and uncomfortable during the    acupuncture session at first but I’m left with a calming   effect later.

 anxiety
anxiety