Getting to sleep at night isn't always easy, and the longer you go without a decent night's sleep, the more likely you are to suffer the consequences of sleep deprivation.
And one doctor has shared a handy test that could help you identify how sleep-deprived you really are - as it tests your brain's perception skills to ensure your mind is functioning at full capacity.
Dr Karan Raj posted the test on his TikTok, where he has gained millions of viewers with his informative videos that provide tips and tricks for dealing with many different health struggles. The video, titled "Take this sleep deprivation test", has been viewed more than 3.5 million times.