Thermoregulatory debt describes the delayed cost of layering decisions made during movement in cold, wet, and windy conditions. A small delay in venting, changing layers, eating, or managing moisture can later become wet clothing, increased heat loss, cold hands, slower movement, and poorer judgment. This episode explains moisture debt, heat debt, and performance debt, and why cold-weather layering is about timing, not just clothing selection. To view the shownotes for this episode of the Backpacking Light Podcast, click here.