(Credit: Djomas/Shutterstock) When you see a great big smile, you know that someone is happy. Pretty simple, right? Such an inference is less a product of deductive reasoning and more like an ...

Recently I made an interesting discovery while running – a simple act that made a dramatic difference and helped carry me through the most challenging segments of long distance runs: smiling. This ...

Ever been in a really bad mood and gotten the simple advice to “just … smile!”? Like that would actually be the answer to all your problems. The outcome would rather be a sassy comment or a huge ...