Skim Milk (Water content: 91%)

Skim milk is high in nutrients. It's largely made up of water and contains a lot of vitamins and minerals including vitamin A, calcium, riboflavin, vitamin B12, phosphorus, and potassium.

Milk not only helps in overall hydration, but it may also help in the hydration process after strenuous exercise. Low-fat milk, especially compared to sports drinks or plain water, has been demonstrated in a few studies to help people keep hydrated after an exercise. This is due in part to milk's electrolytes and protein content, which may help in rehydrating the body. Milk is simple to incorporate into your diet because it is commonly available and reasonably priced.