Why do we rub our eyes when we are tired?

Why do we rub our eyes when we are tired?

Doing your daily morning workout or other physical activities will make you feel tired. This tiredness will often cause our sweat glands to produce more sweat in our body to help control body temperature. At the same time, we will feel a mild itch sensation in our eyes. We often cross with … Read more

Why do eyes burn when cutting onions? How to prevent it?

Why do eyes burn when cutting onions? How to prevent it?

The scientific reason is only this: There are certain compounds of sulphur in an onion. One can fairly call it mild acid. When an onion is cut these compounds spread around in the air and cause eyes to burn. But fortunately they are water-soluble. As a result they dissolve in tears, so … Read more

What are fingernails made of? Why do they appear pink?

What are fingernails made of? Why do they appear pink?

A whopping S250, 000 to paint your nails. I bet you would never, even for an instant, buy the offer. Why would you flaunt a quarter-of-a-million-dollar-manicure when you can buy a house, a high-end car, and afford a tour to your dream destination, shopping spree, secure your child’s education, and buy a … Read more

Why does persistent yelling make one hoarse?

Why does persistent yelling make one hoarse?

What’s common between being on a looping and dashing rollercoaster, in between sweaty crowds for Beyoncé’s concert and that creepy haunted house? Well, it’s the fact that when people find themselves there, the rest sure like to yell! People yell when they see someone from afar they know, or when their favorite … Read more