Dopamine is the molecule responsible for motivation, focus and drive and, to a lesser extent, pleasure. Dopamine does other things, too, of course. There are many ways to increase dopamine: deliberate cold exposure, l-tyrosine from food or supplements, various compounds for ADHD, positive anticipation, novel rewards, laughter, and caffeine…but unlike the other things listed here, caffeine increases dopamine function by increasing dopamine receptors. Here I describe the types of protocols one mig