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.
These vitamins are absorbed by the large intestine along with some ions, but the chief product absorbed by your large intestine is water. Water reabsorption is a main function of the large intestine. It can absorb 300 ml, or about a cup and a half, of water a day. This water removal dries out the feces. If food moves through the large intestine too quickly, it will not have sufficient time to absorb water, which will result in the passage of watery stool, or diarrhea. By contrast, when food residue remains in the large intestine for an extended period of time, too much water can be absorbed.