Virtually everyone has let out a yawn during a dull work meeting or while pouring a cup of coffee in the morning when you’re up earlier than you want to be. But there’s a difference between the occasional yawn and excessive yawning.

If you find yourself yawning several times throughout the day, you may be tired, sure, or there might be something else going on. According to experts, there are several reasons someone may yawn excessively. Wondering what your body is trying to tell you? Keep reading to find out the possible causes and for advice on what to do.

Related: Why You Should Try a 'Coffee Nap'—and Other Surprising Tips on How to Sleep Better

Why Am I Excessively Yawning? Here Are 6 Possible Causes

1. You’re dehydrated

“Excessive yawning can be a sign of dehydration,” says John Landry, RRT, a registered respiratory therapist and CEO of Respiratory Therapy Zone. “If you’re not drinking enough fluids, you may find yourself yawning more frequently,” he says. This is because not drinking enough fluids decreases the amount of blood flow to the brain. This can cause someone to feel fatigued, which in turn, can bring on yawning. In fact, go ahead and take a big gulp of water before reading on.

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