How the full moon affects your sleep

Huntington Beach, CA - January 26: A helicopter is silhouetted by a golden waning gibbous moon rising (99% illumination) as seen from  Huntington Beach Friday, Jan. 26, 2024. January's full moon is called the Wolf Moon, and occurred at 12:54 p.m. Eastern Time (1754 UTC) on Jan. 25, according to the U.S. Naval Observatory. (Allen J. Schaben / Los Angeles Times via Getty Images)
The Wolf Moon, which is the first full moon of 2025, is expected to have an orange hue. (Getty Images)

The first full moon of 2025 - known as the Wolf Moon - will be bringing an exciting celestial event with it as planet Mars will be visible right next to it.

On the night of Monday 13 January, you will be able to see the full moon accompanied by a red "star" located just below and to the moon's left. This will be Mars.

The Wolf Moon will also be a spectacle on its own, as it is expected to look bigger and brighter than usual, with an orange hue.

While humans are fascinated by the full moon, many often wonder whether the moon cycles affect our health at all.

The moon influences many natural processes, such as the ocean’s tides and sea creatures like fish that tend to reproduce when the full moon has risen. But, until recently, scientists dismissed the idea that humans are influenced by lunar activity at all.

However, 2021 research suggests that the full moon does have an effect on our sleep. Sleep researcher Horacio de la Iglesias was surprised to find that both rural communities that used little to no electricity and students living in the bustling city of Seattle got less sleep around the full moon.

Using activity-monitoring watches to track sleep patterns, de la Iglesias and his colleagues found that members of the Indigenous Toba/Qom communities in rural Argentina went to sleep 40 minutes later on average a few nights before the full moon.

Mature woman is exercising next to the window in the dark bedroom
Some people get less sleep in the run-up to the full moon. (Getty Images)

The researchers found similar sleep patterns among undergraduate students living in Seattle, where light pollution usually cancels out moonlight.

The findings echoed that of a 2013 study, which was one of the first studies to suggest a link between the moon and our sleep patterns. It found that people took five minutes longer to fall asleep around the full moon, and also experienced poorer quality sleep, including 30% less deep sleep and 20 minutes less sleep overall.

One explanation may be that the bright light of the full moon keeps us awake - however, the almost-constant presence of artificial light that drowns out moonlight pokes holes in this theory.

One hypothesis that de la Iglesias has floated is that our ancestors may have been kept up later by the light of the full moon, and this tendency may have become ingrained in us.

Another hypothesis, according to SELF, is that the full moon’s greater gravitational pull has an effect on our bodies. This pull is what influences the ocean’s tides. The shifts in the Earth’s magnetic field may also be a possible explanation for why our sleep becomes affected.

However, scientists still don’t know exactly why the lunar cycle may have an impact on some people’s sleep. If you find it harder to sleep in the lead-up to the full moon, scientists recommend practising good sleep hygiene, such as not looking at your phone screen right before going to bed and sticking to a routine to help you settle in for the night.

If all else fails, you can always head outside and indulge in some moongazing. After all, the supermoon won’t stick around for long!

Watch: Supermoon set to rise: Top tips for amateur photographers

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