<s>[INST] What is the process of digestion in human body [/INST] The process of digestion in the human body starts in the mouth with chewing and the release of saliva, which contains an enzyme called amylase that begins breaking down carbohydrates. The chewed and partially digested food then moves down the esophagus and into the stomach via contractions of the esophageal muscles. In the stomach, strong contractions mix the food with gastric juices, breaking it down further.

From the stomach, partially digested food moves into the small intestine, where the majority of nutrient absorption takes place. Here, the food is mixed with bile, produced by the liver and stored in the gallbladder, and pancreatic juice, produced by the pancreas, to complete the breakdown of macronutrients.

The remaining waste products then move into the large intestine, where water and electrolytes are absorbed, and the remaining material is compacted into feces and eliminated through the rectum and anus.</s>\ <s>[INST] How long does this process take? [/INST] 