85% of people fail this alertness test – can you spot all the deer in the photo?

Why do this? First, solving puzzles improves our mood – it’s a great way to boost dopamine production. Secondly, such puzzles train not only our eyes, but also the brain, accustoming it to carefully analyze what it sees.

Sounds big enough to spend 10 seconds? It is during this period that you have to find all the animals in the photo!

Did you pass the test? We have another one for you, and not simple, but with a catch – try to count all the faces in the photo!