So February's challenge: consume less than 2300 mg of sodium per day may be a little more difficult than drinking half your body weight in ounces of water. Because it requires you to really pay attention to what you're putting in your body - you have to read labels, not only with the food you buy, but when you eat out too. If you cook most of your meals at home using fresh, real food most of the time, you should have no problem staying well under the 2300 mg limit. But if you tend to eat a lot of processed food and eat out regularly, that's where the problem lies.

The following foods have more than 500 mg per serving:

- Soup -1 cup is up to 1000 mg

- Soy sauce - 1 tsp up to 900 mg

- Taco - 1 small has 800 mg

- Sauerkraut - 1/2 cup 780 mg

- Vegetable juice - 1 cup 650 mg

- Ham - 2 oz. 600 mg

- Pasta sauce - 1/2 cup is up to 900 mg

- Hot dog - 500 mg

The scary thing is that if you eat out and you think you are eating something healthy like a salad, it actually has a ton of added sodium! For example, the Baja chicken salad at Wendy's has 2200 mg of sodium! And at Chili's, the classic chicken fajitas have 1330 mg and the Margarita Grilled chicken with rice and beans has 1870 mg! Unfortunately, restaurants don't always have nutrition information available. I use a cool App on my iPhone called My Fitness Pal that has the nutrition info for almost every food, including restaurant meals and specific grocery items from stores like Trader Joe's. It really comes in handy and makes you think twice about what you eat. So be wary of what you are eating and try to do most of your eating at home to decrease your sodium intake. And I hope you are drinking a lot of water too!