But just because you have a gym membership that you actually use doesnât mean you canât also have a few things at home for doing other types of workouts that you donât have time for at the gym, or for those days that you just canât make it out the front door.
The inside wall of the small intestine needs to be thin, with a really big surface area. This allows absorption to happen quickly and efficiently. If the small intestine had a thick wall and a small surface area, a lot of digested food might pass out of the body before it had a chance to be absorbed.
When you drink water, it is absorbed through the lining of the small and large intestines into your blood. This absorption occurs at a rate that depends largely on how much water you need at that time. Your body uses the concentration of certain elements to keep track of how much water is in the blood and tissues.