Hot/cold showers: This diagnosis is popular in the eastern europe; in the us it is called vaso-vagal dysfunction (or syncope). Regular aerobic exercise, good hydration, regular meals, and enough sleep can help. A treatment popular in the eastern europe involves taking a hot shower and at the end making the water cold for 2 minutes. This does condition your blood vessels, although there are no controlled studies.
Answered 4/23/2016
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