According to studies by a neuroscientist at the Institute of Psychiatry in London, an hour of laughter each day could help one burn 100 calories. As previously shown in one Japanese study, laughter could even help to lower blood sugar levels following a meal.
Laughter is also understood to protect the heart . Stress can increase cholesterol, but laughter actually lowers the stress hormone. Therefore laughter can be instrumental in avoiding heart disease, angina and stroke.
Laughter may also aid circulation, and could be helpful for patients with diabetic neuropathy, one of the complications of diabetes . According to research, being sad restricts the flow of blood, whilst laughter encourages blood vessels to perform normally.

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