Did you know why we yawn?
The most popular, but likely wrong theory, is that yawning increases levels of oxygen to the brain. A more plausible theory: yawning cools the brain down. A study conducted on mice found that as mice sucked in air, their jaws stretched – this increases blood flow to the brain. This combination of cooler air intake when yawning mixed with the blood flowing to the brain is thought to eventually cool the brain down.
Did you know viruses are not alive?
Viruses are not living things – they are inanimate and do not have cells. Which means that they “cannot turn food into energy, and without a host, they are just inert packets of chemicals,” according to Discover Magazine.
Did you know 'C' is the most common chord used in pop songs?
A man analysed 1300 songs from the top 100 charts in pursuit of patterns. As for chords, he discovered that the most common key in music is C, ranking at 26%. Popular songs in the C key include Bruno Mars’ “When I Was Your Man” and “Take Me to Church” by Hozier.