If you've ever thought you drank enough - you may want to try this test and see how hydrated you really are.
Taking to TikTok, one social media user showed a video of his hand as he pinched the skin on his finger for around three seconds.
The skin went down quickly and according to him, this means you're hydrated.
Originally posted by @remus.bujor on TikTok, Dr Karan Rajan, an NHS surgeon took to social media to explain whether this was in fact correct or not.
Explaining the video he said: "This is known as the skin pinch or skin turgor test.
"The more hydrated you are the more elastic your skin will be and it will bounce back immediately after pinching it.
"If you are dehydrated, the skin loses elasticity and it takes a while to return to normal and it's more likely to tent up."
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Following on in the comment section, the NHS doctor added that due to the test usually being performed on the hand he wasn't sure if the placement was accurate and stated: "FYI: I’m not sure the persons method is accurate and certainly not on the knuckle BUT the principle behind pinch test is correct!"
