What do you do for your brain, /sci/? Do you have any theories or general ideas about maximizing human cognition?

>Mental exercise
Mathematics, playing/making music, strategy games, meditation. What do you do and why? How does it affect your cognition? Do you have a routine?

>Nootropics
Modafinil, alpha GPC, phenibut, noopept, LSD, lion's mane, citicoline, huperzine A, MCT oil, the list goes on and on and on. There are hundreds of supplements and drugs out there that help you get the most out of your mind. Do you use any? Do you have a stack?

>Neuroscience
Neuroplasticity, important brain regions for problem-solving and decision-making, the trade=offs of multi-tasking, flow states, consciousness as a bottleneck for information, latest research, etc.