My personal experience: doing without coffee for a day or two has no effect. Also somewhat oddly, there is one particular place I go where I get a `mocha latte'

My personal experience: doing without coffee for a day or two has no effect. Also somewhat oddly, there is one particular place I go where I get a `mocha latte' and it wires the hell out of me. (It is a great time for coding.) Not sure why.