Circadian Rhythm: Why Following Our Natural Biological Clock is Beneficial For Our Health

When our planet rotates on its axis, it takes approximately 24 hours to complete one rotation. So right from the big bang and when life started on planet earth, every living organism follows a natural 24-hour sleep-wake cycle- right from microbes to mammals. Human beings are no different. When our ancestors used to live in forests, they had no clock to tell the time. In fact, time as a concept was invented only in 1500 BC by the Egyptians. They used to tell time by the position of the Sun in the sky. So, it is natural to assume that the sun controls our circadian rhythm.