Sign up for a class to learn how to perform yoga postures and the proper breathing techniques.

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My hands were shaking and I was going through a few breathing techniques I have been working on with my coach.

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Relaxation techniques such as meditation and deep breathing can bring a toxic level of anxiety down, but harnessing it can ultimately be more effective.

WSJ: Anxiety Can Bring Out the Best

He has brought it down to a healthy level by using relaxation techniques, including deep breathing and guided imagery lying still and imagining stressful tasks turning out well.

WSJ: When Stress Is Good for You

Meanwhile, other psychologists rebelling against Freud pursued behavioral techniques, including relaxation breathing exercises and "exposure" therapy for panic attacks.

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At IMD business school in Lausanne, Switzerland, leadership professor Ben Bryant introduces his executive-education students to techniques for concentrating on their breathing and becoming aware of sounds and sensations, which he says can help them center themselves at the office or in a business meeting.

WSJ: Business Skills and Buddhist Mindfulness