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There are six major types of anxiety.
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Generally speaking, taking medications against depression or anxiety should not always be the first measure to find relief. A health-promoting lifestyle that includes eating a balanced diet, regular exercise, and enough sleep can be very helpful in dealing with many disturbances, both of body and mind.
What sets this study apart is that it was able to demonstrate how participants perceived ambiguous events like being approached by an unknown figure. It found that those who had previously exercised, for example by walking or running on a treadmill, felt less apprehensive about the encounter than others who had remained sedentary.