Parts of the United States were plunged into darkness on Monday as a solar eclipse blocked out the Sun and some social media users have reported "weird feelings" they believe could be down to so-called "eclipse sickness" from the celestial event.
The rare phenomenon happens when the Moon lines up between the Earth and the Sun blocking out the light for a few moments. Tens of millions of people were in the area of complete totality, with many others experiencing the eclipse in some shape or form.
While the eclipse lasted just a few minutes, some people reported feeling strange about the unusual event.
Follow our solar eclipse live blog for all the latest news and updates on the event.
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Humans have been watching total eclipses since the dawn of written history and while they used to be viewed with much suspicion, in modern times for the most part it is seen as something to be marvelled at instead of feared. However, there are still some people who view the eclipse with unease and users have been taking to X, formerly known as Twitter, to describe some strange symptoms.
One person said: "Been feeling physically sick for a few days now and I feel like it’s because of the Mercury retrograde and the upcoming solar eclipse. Does anyone else feel off/sick these days?" while another said: "Any of u also experiencing headache bc of the solar eclipse??"
One user said they had been feeling "wiped out", writing: "A lot of people talking about the Total Solar Eclipse and Full moon... but us anyone else actually FEELING it?... This just has me wiped out feeling weird ". Another claimed it had thrown her menstrual cycle off and their period was now "synced" with the eclipse.
Other social media users revealed they've been battling insomnia too, one user said: "Anyone else suffering from weird insomnia, no appetite and other weird s**t that can’t be explained? Someone told me the eclipse might have something to do with it but I don’t get how."
While the eclipse certainly left some people feeling off, NASA has previously dispelled the misconception that the phenomenon has an impact on human health. In a post ahead of the last solar eclipse visible in the US, which happened back in 2017, the space agency said: "There is no physical relationship between a total solar eclipse and your health, any more than there is a relationship between your health and a new moon.
"Among a random sample of people, you may find such correlations from time to time but they are outnumbered by all the other occasions during which your health was excellent."
When it comes to animals, however, a total eclipse can cause some strange behaviour. Pet owners may have noticed their animals acting differently as animal behaviour is controlled by an internal biological clock optimised by light. This controls when nocturnal animals sleep and rise so the dimming of light during the eclipse could have thrown off some pet's sleeping patterns affecting their hormones.