Have you noticed that right after eating a meal, you feel tired and sleepy? Your body is using that time to digest the food, so it becomes sluggish. The frontal lobe at that time takes a secondary position as your gastrinal intistines does its work of breaking up and distributing the nutrients to various areas of the body.
This is one reason you cannot think straight after a heavy meal. Guess who will then take advantage of you in your physical and mentally low state. Yes, you are correct. satan will then implant sinful thoughts and present opportunities for you to say and do things that are not in harmony of a Christian. In this state, you are more susceptble to temptations.
“As the days of Noah were, so shall also the coming of the Son of man be. For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noah entered into the ark, and knew not until the flood came and took them all away; so shall also the coming of the Son of man be.”
Matthew 24:37
Likewise also as it was in the days of Lot; they did eat, they drank, they bought, they sold, they planted, they builded; but the same day that Lot went out of Sodom it rained fire and brimstone from heaven, and destroyed them all. Even thus shall it be in the day when the Son of man is revealed.
Luke 17:28-30
It is impossible to present our bodies a living sacrifice to God when we continually fill them with corruption and disease by our own sinful indulgence.
“Since the first surrender to appetite, mankind have been growing more and more self-indulgent, until health has been sacrificed on the altar of appetite. The inhabitants of the antediluvian world were intemperate in eating and drinking.
They would have flesh meats, although God had at that time given man no permission to eat animal food. They ate and drank till the indulgence of their depraved appetite knew no bounds, and they became so corrupt that God could bear with them no longer. Their cup of iniquity was full, and He cleansed the earth of its moral pollution by a flood.”
[Christian Temperance and Bible Hygiene, 42, 43] Counsels on Health, 108-110, 1890