A lot. And what's "funny" for bankers is that the return on investment is clearly negative. It degrades your cognitive function over time, your nose if it is u

A lot. And what's "funny" for bankers is that the return on investment is clearly negative. It degrades your cognitive function over time, your nose if it is used by that route, your relations, etc like every psychostimulant (caffeine as well and roughly to the same extent), short term low dose use has some positive cognitive impact, but it goes down with repeated use and/or increased doses. in the end not really worth it if your objective is cognitive enhancement (and not talking about the societal impact in the zones of production, which at least with coffee you can control a little)