Fallen Triangle can be a tricky yoga pose. Your legs turn away from your body in opposite directions. Your front hamstring is stretched beyond what may seem reasonable. Your core muscles--including ...

Sure, riddles are fun if you’re a fan of clever wordplay. But there’s something so uniquely enjoyable about a good visual puzzle. So today, we’re calling all brainteaser aficionados: How many ...

There’s nothing quite like a maddening math problem, mind-bending optical illusion, or twisty logic puzzle to halt all productivity in the Popular Mechanics office. We’re curious people by nature, but ...