If you’re stuck in a research rut, why not assuage your most stubborn mental blocks with some recreation time? You might be surprised at the breakthroughs that strike when you’re playing Scrabble in the park or skipping town for the Renaissance Fair. Still struggling with a thorny question? Confront the tricky stuff as the feel-good chemicals flow. When you take a playful approach, important insights will want to frolic with you too.