Namaste
Absolutely correct observation.
It is related to digestive system.
Indigestion and slow digestion is the reason.
Heavy foods , frequent eating and frequent drinking habit worsen the condition.
Next Steps
follow the food habit like this
Breakfast with a liquid diet ( water/ milk/ tea/ coffee)
Lunch with water
Evening a drink like milk / tea/ coffee( not a compulsion)
Early light dinner with water
2hr gap to sleep after dinner
This habit maintains digestion
Drink water if only you feel thirst ...
Health Tips
For a week
Drink water boiled with quarter tsp of ginger powder or fresh chopped ginger in 200ml water .. this is ratio... make water according to your need.
Eat 2 or 3 pinches black salt with quarter tsp jira powder with a tsp of melted ghee with hot food at starting... for 2 or 3days
should correct the problem
if not need to find out specifically