If you are one of the 70+ countries in the world who change their clocks twice a year, you may have asked – or been asked – “Why?” This question is usually met with vague answers like “I think it’s for the farmers?” But why do we voluntarily give ourselves jet lag twice a year? And when did we start doing it? In this video, we’ll explore how the practice came about, which countries adopted this method, and if it is still necessary today.