Sleep rhythm.
Be strict about bed times and wake times.
Light.
Spend more time outdoors.
Cardio exercise.
Aerobic exercise.
HIIT Training.
Eating times.
Nose breathing.
Belly breathing.
Wim Hof technique.
Inositol
Forskolin
Vinpocetine
BCAA
Emotion. Live with passion.
Stress.
Prioritize. Triage. Xinfinity.
https://thoughtbrick.com/wim-hof-method/wim-hof-method-power-breath-exercise-explained/
http://blogs.discovermagazine.com/crux/2017/07/06/wim-hof-breathing-science-of-breath/#.XYpAdi2ZO7M
Patrick McKeown book The Oxygen Advantage.
