
“ Psychology and Behavior ” ( Psychology and Behavior ) found that sleep patterns and stress caused fluctuations in brain temperature has been determined. Research has revealed a significant benefit of yawning. Yawning helps maintain normal brain temperature and cellular metabolism at an ideal level. Yawning cools the brain, increases the amount of oxygen and improves mental productivity.
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"Yawning brings yawning", let him bring it! – INCREDIBLE BENEFITS
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