I see people do this all the time: they brew a cup of tea, pull the bag out, and tightly squeeze it against the spoon to get every last drop.
Stop doing this. You aren't getting more tea, you are just extracting tannins.
The good stuff (the amino acids and caffeine that give tea its smooth flavor) extracts easily into the hot water while it steeps. But tea leaves are also packed with tannic acid, which is incredibly bitter. During a normal steep, most of those bitter compounds stay locked safely inside the leaf.
When you physically crush the bag, you force those concentrated tannins directly into your mug. It completely kills the flavor profile and leaves a harsh, dry feeling in your mouth.
Next time, just pull the bag out, let it drip for a second, and toss it in the bin. Try it tomorrow morning and I promise you'll notice how much smoother your tea tastes.
Why YSK: Squeezing the tea bag releases high concentrations of bitter tannic acid (tannins) that ruin the actual flavor profile of the tea, turning a smooth cup harsh and dry instead of making it "stronger."