Smoothies are a healthy and satisfying breakfast or snack. And, by adding yogurt, kale or bananas to your smoothies, you’ll increase your odds of a successful slumber at night. The nutrients in bananas, kale and yogurt have all been shown to promote restful sleep. Try our Citrus Berry Smoothie or our Green Smoothie for a refreshing and healthy smoothie recipe. Download a Free Healthy Smoothie Recipe Cookbook!