Would water or diet pepsi hydrate you faster and have diffusion?

Water would hydrate you faster than diet Pepsi. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. When you drink water, the water molecules move from the stomach and intestines into the bloodstream. The bloodstream then carries the water molecules to the cells throughout the body. Diet Pepsi contains caffeine, which is a diuretic. Diuretics cause the body to produce more urine, which can lead to dehydration. In addition, diet Pepsi contains artificial sweeteners, which can also interfere with the body's ability to absorb water.