How to Get It: Hate bananas? Eat sweet potatoes.
Although bananas might be the best known potassium source, plenty of other fruits and vegetables fit the bill. A medium baked sweet potato (543 mg) has more potassium than a medium banana (422 mg). The daily recommendation for adults is 2,000 mg. A medium white potato (926 mg), cup of pumpkin (505 mg), cup of cherry tomatoes (353 mg), cup of cooked spinach (839 mg) or 1/4 cup of raisins (309 mg) all deliver a good dose of potassium, which is critical for helping nerves transmit signals, muscles contract and cells maintain their fluid balance.