Technology and culture allow us to achieve incredible things, but it is delusional to think we can override our evolutionary needs and desires without paying a price.
The body clock drives huge changes in the human body. It alters alertness, mood, physical strength and even the risk of a heart attack in a daily rhythm. It stems from our evolutionary past when we were active in the day and resting at night. But scientists have warned that modern life and 24-hour society mean many people are now "living against" their body clocks with damaging consequences for health and wellbeing.