Sara Marín Berbell, physician: "There must be a balance between salt and water in the body."

Feeling heavy in your legs isn't always just due to salt or excess water in your body. Doctor Sara Marín Berbell explained in a viral video that the problem often lies in a deeper imbalance : "There needs to be a balance between salt and water in the body."

The specialist explains that when you consume more salt than necessary , your body tries to compensate . "The water in your cells comes out to balance that amount," she says. This causes cells to wrinkle and, paradoxically, tissues to swell .

At this point, potassium becomes a key ally . According to Marín Berbell, "it helps your body eliminate that excess water " through urine, helping the body reduce bloating. And best of all: meeting the recommended three grams per day doesn't require supplements, as they can be obtained from common foods .

But adjusting your diet isn't enough. The doctor insists that hydration is essential: "If your cells remain dehydrated and dry, your body goes into survival mode to get water and retains even more." Drinking enough fluids , along with reducing salt and consuming potassium , is the formula for seeing real changes .

Thus, the professional warns that limiting salt intake is only part of the solution. Without potassium and sufficient water, water retention will continue, so maintaining this internal balance is key to feeling lighter and healthier.