Deliberate cold exposure releases dopamine in a tonic and lasting way — the same neuromodulator that fuels motivation, drive, and pursuit. Two to five minutes, cold enough to want to leave.
About the concept
Mental Toughness
Mental toughness is not grit. It is not Stoicism. It is not Sisu. It overlaps with all three and is the same as none of them. The modern doctrine — codified by David Goggins, Jocko Willink, Mark Divine, and the SEAL selection programs they came out of — is built on a small set of…
Read the full concept →