Why can’t you simply replace lost minerals with the same amount in a drink?

Replacing sweat-related mineral losses with identical amounts in a drink is not always effective, as the body’s absorption, needs, and losses are influenced by more than just the quantity of sweat. Electrolyte absorption in the intestines is affected by factors such as pH, hydration status, the presence of other nutrients, and individual metabolic differences. Some minerals, like magnesium and calcium, are also absorbed in limited amounts at a time, and the body’s regulatory systems can either enhance or inhibit uptake depending on current needs. Therefore, electrolyte supplements should be seen as support—not a precise replacement—for fluid and mineral loss.