I have heard more than once from Anglo-philes and the English themselves the hilarious assumption that a cup of tea can cure a broken leg. While I'm not convinced, I knew that Mrs. Black would have some strong views on tea. Indeed.
A quick check of Wikipedia reveals that "theine" was later identified as being the same thing as caffeine (winning that scientist - Hermann Emil Fischer - a Nobel Prize in 1902). And as we all gratefully acknowledge the blessings of caffeine, we may also cringe at the idea of adding a well-beaten egg to our tea.
Everyone who drinks tea has their own little rituals. I add the sugar first, along with a tea bag, fill the cup with boiling water and let it steep for as long as it takes me to put away dishes from the dish rack or some other menial kitchen task better done while half asleep. A little milk, and I'm ready to go. My parents, who instilled a love of tea in me at an early age, actually set the timer for one minute, fifteen seconds, or some other very specific amount of time before removing their tea bags. Others prefer loose tea, as my mother in law did until she too realized the convenience of tea bags, despite the unsightly appearance of a soggy tea bag on a saucer. (Quickly whisked away) She preferred lemon in her tea, generally preferring Earl Grey to English Breakfast. The hint of bergamont going much better with citrus than milk any day of the week.
There is something about these rituals that are, in themselves, calming. And the never ending supply of tea accessories appeals to the consumer in us all. The subject of tea is as vast as the oceans that bring tea leaves to us from around the globe, but as drowsiness has now been driven from my body by a nice strong cup of PG Tips, I'm off for the day. The jam jars are sending out their siren call...