As Adrian did recently, I’ve gone completely caffeine free at work, and have been so for about a month (except on the odd occasion that I’ve forgotten and lapsed). The only things I’ll allow myself are herbal tea, normally camomile, or from time-to-time a green one. I did this primarily for health reasons - I am finding that my ability to concentrate is much better now, as well as suffering from fewer headaches and other unpleasant side-effects. However, I was spurred on by the poor quality of tea and coffee provided by Ritazza here at work - this is something I’ve realised ever since I’ve began to make tea and coffee properly at home. I’ve also found that I’ve been drinking less tea and coffee at home since cutting off caffeine at work - I seem to find it less appealing. The whole exercise also saves me a penny or two as well.
I can recommend it.