As the investigators have shown before, there was a tendency for a reduction of anxiety levels on university students after 30 minutes, with auriculotherapy treatment before examinations have started. However, the effect was effective and clinically significant after 48 hours comparing auriculotherapy with placebo and no treatment. In this sense, the investigators intend to perform a new study with a large sample and introduce a new hypothesis. So, this study aims to detect the clinical effect of two auriculotherapy techniques on the anxiety levels of university students.
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Change on Spielberger's State-Trait-Anxiety Inventory (STAI)
Timeframe: Change from baseline to after 8 and 24 hours.
Change on Salivary amylase (U/ml)
Timeframe: Change from baseline to after 16 hours.