David,
Every time I try to stop my intake of caffeine I get massive headaches. I stopped a week ago and prepared by buying a bottle of migraine Advil. The first few days were tough but now I feel fine.
I asked my trainer about the BMI and he said it is garbage and a waste of time, because it doesn't factor in muscle mass or even age. Good thing he doesn't have a strong opinion.
Yeah I am sure the coffee or lack of coffee did that to me - But I have relapsed and realize that giving up coffee is over rated.