should i get sunlight before or after cold exposure in the morning

Andrew Huberman suggests that it doesn't matter much whether you get sunlight exposure before or after cold exposure, as long as you integrate both into your early morning routine. He occasionally starts with sunlight and then opts for cold exposure, depending on the circumstances and how he feels on a particular day. The important thing is to engage in both activities early in the day to elevate catecholamines and cortisol, boosting alertness and wakefulness 1.