, we don't really believe in it all the way. It seems to us something mystical, too philosophical and far from our way of life to be true. Yet there are signs that remind us every day of how much our bodies follow a bigger clock than the one we wear on our wrist.

We see this with sleep, circadian rhythms, and the melatonin cycle.

Circadian rhythms

Circadian rhythms are cycles of about 24 hours that alternate within our bodies. The term comes from the Latin circa and diem, literally " around the day."

The first discovery in this regard was made in 1729 by a French astronomer who decided to study the behavior of Mimosa Pudica, also known as the Sensitive. Following an experiment it turned out that this plant seemed to open and unfold its leaves according to its own particular internal rhythm.

In later years it was discovered that humans also possess "clock" genes that determine the alternation during the day of different biological functions, and these genes are activated in response to sunlight or darkness in the evening. So we have an internal clock that sets the rhythms of our body depending on the time of day we are in.

Circadian rhythms dictate the rise or fall of body temperature, hunger, the functioning of certain organs, and especially sleep.

Melatonin

This is where melatonin, one of the most important molecules in regulating circadian rhythms, comes in.

Instead, melatonin production occurs during the day, while its release occurs during the night, promoting sleep. Not coincidentally within the name of this hormone is the key to its functioning: in Greek melas means black, dark.

However, melatonin secretion can undergo changes throughout life. Peak production occurs around age 3, but declines with advancing age, due to calcification of the epiphysis (gland responsible for its secretion).

This is why, as we reach adulthood, sleep becomes lighter and we can no longer sleep "like children." To restore the normal rhythm of our biological clock, we recommend taking one tablet of Melatonin or 20 drops in a glass of water before falling asleep.

You will also notice an improvement in insomnia related to brooding or mild states of anxiety. And if you travel frequently for work always keep a supply in your suitcase, as it is also very useful for fighting jet leg.