If drinking tea kept me fit, I'd be the equivalent of someone who runs for half an hour as soon as she gets out of bed in the morning and who uses weights while sitting at her desk.

I'd be like those people who meet their friends at the gym to chat over a work-out; who only watch television from a mini-trampoline; and who, when flying, do all the exercises they tell you to do to prevent deep-vein thrombosis.

I expect the very fit never go to bed at night without first doing something to improve their fitness level, and although I can't imagine what that could be, if drinking tea kept me fit, then it would be as if I too were doing what ever that is too.