Just being intelligent doesn’t mean someone will be successful. And just because someone is less intelligent doesn’t mean that person will fail. That’s one take-home message from the work of people like Angela Duckworth. Can you find a sock in this picture?

Brain teasers boost your memory and help you burn more calories. And although solving riddles isn’t enough to keep fit, it’s certainly the easiest and funniest way to burn some calories from guilty pleasures.

Riddles that challenge us to spot differences between 2 similar images activate our concentration power to the maximum: they put our eyes and brain to work. This is great because training our minds is as important as exercising our muscles!