There are many ways to exercise your brain. The more popular ones are crossword puzzles, trivia questions, and Sudoku puzzles. The internet also provides a plethora of quick online tests for a quick brain-picking.

Did you look long and hard at the image above? What do you see? Just rows and rows of letter M”, then you might want to have a second look.
This is a tricky image pattern that puts your mind-eye coordination at test. Here’s a hint: there’s a letter N hidden among these Ms. All you got to do is find it. But there’s a catch to it. You have ONLY ten seconds to do it.
If you spotted the sneaky letter within 10 seconds, here’s some good news for you. You’re 1 out of the 10 people who can actually ace this test. Do you know what that makes you? A genius!
Okay. Ready? 3…2…1…let’s go!
How did you fare? Think you got it within the time frame? If you missed the shot, it’s alright. Here’s the hidden N. That was a good challenge, right? I’m sure you’re feeling all pumped and productive right now.