If you eat a lot of salt—like 18 grams a day for 10 days—your body will flush out more salt in your urine and also have a bit more salt in your blood, which proves you actually ate the salty food they gave you.

If you eat a lot of salt—like 18 grams a day for 10 days—your body will pee out more salt and your blood will have a bit more salt too, which proves your body is responding as expected to the extra salt.

Even if you eat a ton of salt for 10 days, your blood pressure won’t go up if you’re a healthy young adult—your body just pees out the extra salt and your blood stays normal.

When people who don’t get high blood pressure from salt eat more or less salt, their kidneys adjust how much salt they pee out—no matter if they’re male or female.

Even if you eat a lot more or a lot less salt for a week, your body still pees out about the same amount of potassium — your kidneys keep potassium steady no matter how much salt you consume.

Even if you eat a lot more or a lot less salt for a week, your body still pees out about the same amount of potassium — your kidneys handle potassium on their own, not by following how much salt you eat.