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Watching stressful movies triggers changes to your heartbeat

Watching films with stressful scenes can trigger changes to the heart's beating pattern, reports a new study. "This is the first time that the effects have been directly measured and although the results varied from person to person we consistently saw changes in the cardiac muscle. If someone already has a weakened heart, or if they experience a much more extreme stress, the effect could be much more destabilizing and dangerous," researchers stated.
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