If you’ve ever felt tired after a big meal or uncomfortably energized after an evening espresso, you know that food and sleep are related. What you eat throughout the day may contribute to how well or how poorly you sleep at night. Eating too little fiber and too much saturated fat and sugar, for example, has been shown to lead to lighter, less restorative sleep. And a dinner that’s spicy, fried, or fatty is often difficult to digest, which may mean nighttime indigestion and difficulty relaxing and falling asleep. People who eat an overall healthy diet – with a large variety of nutritious foods — tend to have healthy sleep patterns.