6 to 8 hrs for digestion. it stays in the stomach for 2 hours and then in the intestine for another 2 hours. the undigested food goes to the large intestine and the digested food goes to whole body through blood. Carbhydrates and proteins about 1 1/2 -2 hrs. Fats 2 hrs.
And based on that a foetus does not posses self-awareness. Human babies have been found to become self aware between the ages of 18-24 months. The rouge test is a self-recognition test that identifies a human child's ability to recognize a reflection in a mirror as his or her own.
Level 5: Self-consciousness or meta self-awareness. At this level not only is the self seen from a first person view but its realized that it's also seen from a third person's view. They begin to understand they can be in the mind of others. For instance, how they are seen from a public standpoint. Infancy and early childhood