If your New Year resolution includes a commitment to more aerobic exercise, take a tip from the Tarahumaras, a group indigenous to the Sierra Madre Occidental Mountains of Mexico. Considered among the most skilled long-distance trail runners in the world, they’ve been the subject of books, magazine articles and scientific studies. Remarkably, the diet that sustains their extraordinary fitness is built around beans, especially pinto beans. Corn, chili peppers, squash and greens also play important roles in their menu. Try this recipe.