The 1960s technique involves focusing on the diaphragm while breathing, and emphasises breathing through the nose, accompanied by relaxation training.

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There is certainly no shortage of stress relievers and in addition to the above, various progressive muscular relaxation exercises, autogenic training, deep breathing, massage therapies, visual imagery and self-hypnosis practices are popular.

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One group, with 19 children, received standard treatments for anger including cognitive-behavioral therapy, presentation of relaxation techniques and social skills training for five consecutive business days.

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They said these could include interventions involving conflict management, relaxation, assertiveness and social skills training.

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One reason, perhaps why George Osborne did at least allow a modest relaxation in his budget last March: 'training days' will now be included in the calculations so that the proportion of global endorsements caught by the UK's tax net will be reduced.

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