YIN AND YANG (GLUTAMATE AND
GABA)
Acknowledge your biological excitation mode and
inhibition mode, and understand that you need both
regularly: exercise and recovery, adventure and
relaxation.
ACETYLCHOLINE
Avoid toxic anticholinergic drugs.
Ensure adequate dietary choline intake.
SEROTONIN
Maintain adequate omega-3 intake (see chapter 2 for
a refresher).
Get a blood test to ensure optimal vitamin D levels.
Most often you will have to specifically request that
your doctor test for this, and it is an inexpensive test.
Though there is no consensus, the latest research
suggests that having D levels in the range of 40 to 60
ng/ml is optimal (see chapter 12 for further
explanation).
Exercise often, which sends tryptophan straight to the
brain, in an effect that persists even after exercise.
Without looking directly into the sun, ensure daily
