Deliberate cold exposure is an effective tool for shifting one's mental state, regardless of the debate over its metabolic or dopamine effects.

“Any debate about deliberate cold exposure to me that centers around metabolism or how long the dopamine increase lasts is kind of a trivial one in my estimation because what do we know for sure? We know that deliberate cold exposure is very, very low cost or even cost saving if you use a cold shower”

An individual's physical state, such as fitness or energy level, influences their visual perception of the environment, causing challenging tasks to appear more difficult.

“what they find is that distances look further to those that are overweight, chronically tired, older rather than younger, weighted down with with extra baggage. um, distances look further and hills look steeper.”