There's a reason why your parents tell you when you're young about the dangers of messing around near water.
Sadly, it doesn't appear as though the message was passed on to UFC fighter Merab Dvalishvili, from Georgia, who recently cracked his head open after diving head first into an icy lake.
Yep, it turns out that the 30-year-old, despite being nicknamed 'The Machine', was no match for mother nature.
The bantamweight fighter shared the gnarly moment on social media, showing him throwing himself onto the ice before re-emerging with blood pouring from his head.
In the video, he says: "I thought (it was) a great day to train and run in the park.
"Then I saw a pond which I thought was snow and water.
"But it turned out to be all ice and tree branches sticking out.
"As soon as I broke through the ice I felt my skin peeling off."
But 'The Machine' actually said the worst part about it was when he went to hospital 'when they stapled my skin back together'. Yikes.
Luckily, doctors were able to patch him back up and he assured his fans that 'it is all good now'.
Adding: "I made a mistake."
Let's just hope he's learned from his 'stupid mistake'.
Now, Dvalishvili isn't the first person to jump into a frozen lake, but maybe he should think about leaving this kind of thing to the professionals.
Last year, Stig Severinsen set the word record for the longest underwater swim with one breath.
The swimmer, from Denmark, completed the incredible feat in La Paz, Baja California Sur, Mexico, on 26 November 2020, swimming 202m (662ft 8.7in).
The 47-year-old managed to hold his breath for two minutes and 42 seconds in order to break the record.
The talented swimmer attempted the record in order to inspire young people to take an interest in the oceans and conservation.
But this isn't the first record Stig has broken in his time, not by a long way.
Back in 2010, he swam 72 metres (236 feet) under ice wearing only swimming trunks and goggles.
And in the same year, he then went on to hold his breath for 20 minutes and ten seconds in a tank full of sharks - a record he again broke in 2012 and 2016.Featured Image Credit: Merab Dvalishvili