Therefore qe implemented a validated stress test, the Trier Social Stress Test TSST, which is known to provoke serious stress responses in healthy subjects. 24 medical students with test anxiety in there history will be randomised to two interventional groups (verum acupuncture and laser acupuncture), being treated and then pass this test. Main outcome is the increase of cortisol in saliva, which is the standardized measure of stress response used in this paradigm.