Levothroid In Us

Yawning may keep us 'on the ball' Tyler Crotty yawns as President Bush speaks

This boy's brain may just have been getting warm, levothroid in us the study suggests

Yawning may appear the height of rudeness, levothroid in us but in fact your body is desperately trying to keep you awake, levothroid in us according to research from the US.

Psychologists who studied 44 students concluded that yawning sent cooler air to the brain, levothroid in us helping it to stay alert. Levothroid in us Yawning therefore delays sleep rather than promotes it, levothroid in us the study in Evolutionary Psychology suggested. Levothroid in us The desire to yawn when others do so may also be a mechanism to help a group stay alert in the face of danger. Levothroid in us The common wisdom is that people yawn because they need oxygen, levothroid in us but the researchers at the University of Albany in New York said their experiments showed that raising or lowering oxygen and carbon dioxide levels in the blood did not produce that reaction. Levothroid in us The next time you are telling a story and a listener yawns there is no need to be offended - yawning, levothroid in us a physiological mechanism designed to maintain attention, levothroid in us turns out to be a compliment   http://news.bbc.co.uk/1/hi/health/6268428.stm