Creating Extra Water Needs

• Obligatory urine production: soluble waste plus enough water to keep it liquid
• If extra "soluble stuff" is ingested,
  • Extra water must be drunk to keep in it balance, creating a need for more water than o/w needed
  • Extra water is needed to create the urine needed to excrete it.
  • So to eat extra "stuff" increases the water you must pack along and increases the urine you have to dispose of.
• The "stuff" we eat in excess is mostly salt!

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