Possible consequences of drinking cold water after meals

Slower digestion:
The body needs to restore the proper internal temperature, so it may take longer to digest food.
Upset stomach or gas:
Some people may experience mild abdominal pain, belching, or a feeling of fullness from the sudden cooling of the digestive system.
Reduced absorption of nutrients:
In cases of slow or weakened digestion, the body may absorb certain minerals and vitamins less effectively.
Postprandial fatigue (tiredness after eating):
Heavier digestion can lead to drowsiness or a slight feeling of exhaustion.