Most of us can feel a yawn coming on. The muscles in our jaw begin to tighten, our nostrils might flare, and our eyes might tear up as our mouths stretch open and we inhale a gust of air.

Are you yawning yet? Thought so ... that we blink because we need to keep our eyes moist. When our eyes are open, the tears that usually covers the surface starts to evaporate, and if our eyes ...

When these glands are stimulated by emotional or physical factors, they produce tears to lubricate the eyes. The next time you tear up, don’t overthink the meaning of the tears, just let them ...