Why Does Sweat Turn Shirts Yellow?

Contrary to popular belief, sweat doesn’t cause the yellow stains. In fact, sweat is a colourless liquid. It, therefore, cannot possibly cause staining even on light coloured clothes. A chemical reaction then occurs between the deodorant or antiperspirant and the sweat. Yellow pit stains are caused when odourless, colourless sweat reacts with aluminum in antiperspirants. … It’s why yellow pit stains appear on your white undershirts or…

Why do we Yawn?

Why do we yawn? One is that when we are bored or tired, we just don’t breathe as deeply as we usually do. As this theory goes, our bodies take in less oxygen because our breathing has slowed. Therefore, yawning helps us bring more oxygen into the blood and move more carbon dioxide out of the blood. Even thinking about yawning can cause you to do it. It’s…

Your Brain On Coffee

Coffee is an incredibly healthy beverage. It contains hundreds of bioactive compounds that contribute to its powerful health benefits. Many of these compounds are antioxidants, which fight the damage caused by free radicals in your cells. Caffeine, present in the coffee, affects the central nervous system in several ways. Caffeine is the key reason why coffee boosts brain…