Cherry

It does not only alleviate pain and inflammation, but also contain melatonin which is the hormone that helps  to sleep.
Cherries are full of anthocyanins , that is antioxidants which gives its red colour. These components are responsible for the prevention of pain, helping to stop the production of certain enzymes which causes inflammation.

Cherries are very effective in the treatment of Gout - type of arthritis that occurs when uric acid builds up in the joints, causing severe inflammation.

Cherries may also alleviate the pain caused by rheumatoid arthritis, such as fibromyalgia - pain in the joints, muscles and tendons.

Sleep Quality
Cherries also contains antioxidants like superoxide (good for the joints and for a healthy respiratory and gastrointestinal system) and the hormone melatonin, the best inhibitor of free radicals that has already been founded so far, also great for the immune system. Low levels of melatonin has been linked to insomnia and poor sleep quality.

Nutrients found in cherry:
Vitamin B3,B5, C
Betacarotene, biotin, folate, calcium, iron,magnesium, manganese, phosphorous, potassium, selenium, fibres and carbohydrates.

I suggest you to include cherries in your diet. Best option is to eat as a desert at night. If eaten during the day may cause tiredness due to its high content of melatonin, the sleep hormone!