The simple metabolism hack that helps avoid 3am wake-ups — and it's the Blue Zone secret to longevity, too

A woman stretches as she wakes up to a hearty breakfast after sleeping through the night. Next to this picture, there is an image of a digital clock displaying the time of 3am. .

It's no secret that diet and sleep are intertwined. A poor diet can lead to sleeping poorly, while poor sleep can lead to eating poorly.

On the other hand, getting good quality sleep curbs junk food cravings during the day, while a healthy diet leads to better sleep at night.