You may think you're a genius, but have you ever put it to the test? Many of us like to think we are clever, but the fact is, we all have to work to keep our brains sharp.
Completing puzzles like brain teasers and optical illusions can give our brain a cognitive workout, and stimulate our abilities. It also helps by making your mind concentratbe on one task at a time.
If you do these regularly, it can help boost brain function and even improve your memory – so why not take on the challenge?
In a new, mind-boggling optical illusion, you're challenged to find the hidden face of a man in a mountain side – and it's a lot harder than it looks.
According to website JagranJosh, only a genius would be able to find it within 15 seconds.
In the optical illusion, you can see a man climbing a mountain with the help of an axe – but your job is to find the hidden face in the mountain side.
According to the website, thousands of people have been left scratching their heads trying to find it.
If you did, it's apparently a sign of "extraordinary intelligence" because you've managed to see something that your brain is telling you isn't there.
If you're struggling, here's a hint – flip the image upside down. If you still can't see it, we've posted the answer below.
Studies show that the more you exercise your brain with difficult puzzles, the smarter you tend to be – so how about another?
There are three red darts hiding among the dartboards in an image, and you're challenge is to find them all within 15 seconds.
If that was too easy for you, how about a letter-based brain teaser? This one challenges you to find the odd letter within a sequence of Ms in just 11 seconds.
Another brain teaser has left people scratching their heads over the answer, so why not give it a go? You need to spot the deer who is hiding from hunters in the forest.
Did you find the man's face? Let us know in the comment section below.