Jantarei is right ,when buy any products check sodium content and avoid more sodium content products ,even same products with different company have different sodium content level. Junk food is also one reason !!! i always try to prepare my own food ,i try to avoid mac D or either TacoBell or  subway blah blah blah ...So it;s better if you can prepare your own food with everything less ,less fat.,less salt, and yes Don';t drink water untill you burst out !!!!!