There are also acupuncture, acupressure, biofeedback, Alexander, Reiki, Feldenkrais and other bodywork and postural techniques.

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Kegel exercises may be most successful when they're taught by a therapist using biofeedback.

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Another increasingly popular method known as biofeedback focuses on developing breathing techniques to keep the heart rate down.

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Biofeedback involves monitoring devices to help ensure that you're tightening the proper muscles with the optimal intensity and duration.

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More drugs are in clinical trials, and non-drug treatments such as acupuncture, massage, biofeedback and transcranial-magnetic stimulation are also showing some promise at alleviating migraine pain.

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It can act as a graphical biofeedback device that cues you into the impact smoothing your pedal stroke and making small fit adjustments can have to your power output.

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Mike Ambinder is the company's very own experimental psychologist and he's been outlining some of Valve's work with biofeedback technology, including eye-motion controls for Portal 2 and perspiration-based gaming adjustments on Left 4 Dead.

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