Most fish—and especially salmon, halibut and tuna—boast vitamin B6, which is needed to make melatonin (a sleep-inducing hormone triggered by darkness)
2. Tart Cherry Juice
In a small study, melatonin-rich tart cherry juice was shown to aid sleep. When adults with chronic insomnia drank a cup of tart cherry juice twice a day they experienced some relief in the severity of their insomnia.
Dairy products like yogurt and milk boast healthy doses of calcium—and there’s research that suggests being calcium-deficient may make it difficult to fall asleep.
4. Whole Grains
Bulgur, barley and other whole grains are rich in magnesium—and consuming too little magnesium may make it harder to stay asleep, reported the Journal of Orthomolecular Medicine.
Bananas, well-known for being rich in potassium, are also a good source of Vitamin B6, which is needed to make melatonin (a sleep-inducing hormone triggered by darkness)
We know its not a food but this drink definitely makes the list, ask any british family and this will be the definitive answer for a good nights sleep.