How long can you survive drinking only tea or coffee? [Spirituality & Religion]

My veins have coffee in them so indefinitely :)

I'm not sure. I remember a news article a few years ago where a man died from drinking nothing but tea for too long. I don't know if there's a science behind that or if he had a health condition or what. But it's probably extremely rare for that to happen, it's not often you hear someone dying from tea or coffee xD

I've gone about two days before, but I wouldn't recommend it.

It seems like forever but actually a day or so