Your body will tolerate sodium only in certain concentrations. The more salt you eat, the more water your system retains to dilute it. But getting rid of unneeded salt is easy, drink plenty of water. Water forced through the kidneys removes excess sodium. The overweight person needs more water than the thin one.
Larger people have larger metabolic loads.
Since we know that water is the key to fat metabolism, it follows that the overweight person needs more water. Water helps to maintain proper muscle tone, but giving muscles their natural ability to contract and by preventing dehydration. It also helps to prevent the sagging skin that usually follows weight loss. Water buoys shrinking cells that plums the skin and leaves it clear, healthy and resilient. The Waste Water helps rid the body of waste.