Sometimes you just need a good night's sleep, and with the natural melatonin in dark cherries and the magnesium in the cacoa in this smoothie, you'll be well on your way to a great rest. Delicious, healthy and filling, this is a nighttime smoothie anyone can get behind. Healty smoothie recipes. Chocolate smoothie recipes. Bedtime smoothie recipes. Easy smoothie recipes. The best smoothie recipes.