Tea makes you pee because tea contains caffeine which is a diuretic.
That diuretic from the teas caffeine makes you produce more urine faster so you pee more.
Coffee can make you pee more as well as the caffeine contained in the coffee is also a diuretic.
Tea can make some people poop as the caffeine in the tea can act as a bowel stimulate for some people.
Tea also can make you pee a lot as the caffeine in tea is also a diuretic.
Also some people may poop more when drinking tea when they have digestive issues with the tea.
Some people have trouble digesting the Tannin in tea while coffee is easier to digest so some people get an upset stomach with drinking tea and not coffee.
When tea upsets your stomach but coffee does not then it's likely because you're drinking it on an empty stomach or have trouble digesting the tannin that tea contains.
Tannins can bind to proteins and carbs in food, which can minimize digestive irritation.
Tannins in tea may irritate digestive tissue in sensitive individuals, resulting in symptoms like nausea or stomach ache.
Drinking Tea on an empty stomach is not bad.
Many people including myself drink tea on an empty stomach with no issues.
I drink a cup of warm tea in the morning before breakfast on an empty stomach and never had any issues.
The reason it's considered bad for some people to drink tea on an empty stomach is because the tea can disrupt your acid and alkaline balance.
Having tea on an empty stomach can disrupt your acid and alkaline balance.
Tea can cause constipation: A chemical present in the tea called Theophylline can have a negative effect on your digestive system which can lead to constipation.
Tea has traces of nicotine, which makes you addicted to the beverage.
There are numerous people who start their day with tea on an empty stomach.
Apart from being one of the top causes of acidity, morning tea can result in washing out of bacteria right from your mouth to your gut.
In the gut, it interferes with good bacteria, and might disrupt your metabolism and upset stomach.
Drinking tea right in the morning may disrupt your metabolic system due to imbalance of acidic and alkaline substances in the stomach which can interfere with the regular metabolic activity of the body and keep you troubled through the day.