Lack of water triggers yawns: study

/ Courtesy of Doctoroz blog

Dehydration causes yawning, research has found.

According to the United Kingdom’s Natural Hydration Council, patients suffering extreme tiredness are lacking water, which triggers yawning.

“I see many people in my surgery who are feeling tired all the time,” Dr. Roger Henderson, an adviser to the council, said.

“There are, of course, several reasons that could be causing this but a surprisingly common cause is that they are dehydrated.”

Women are advised to drink 1.6 liters of water a day; for men it is two liters, according to the National Health Service.