A study by the British Heart Foundation found that going to sleep at a certain time of night could reduce the risk of heart and circulatory diseases in later life ...

The US enjoyed the lifesaving "golden hour" in recent conflicts. But the war in Ukraine suggests that may be over, with dramatic consequences.

There's a so-called 'sweet spot' when it comes to what time you fall asleep, and it's not as unattainable as you might think ...