Vasodilation and Constriction

It appears that humans (and animals) can regulate vasodilatation and vasoconstriction. Robert Freeman and his colleagues have carefully worked out the mechanisms in finger blood regulation using biofeedback training procedures. First, they demonstrated that volunteers could warm or cool their hands upon command. Then they used a series of pharmacological blockades to show that the ability to cool one's fingers is mediated by the sympathetic nerve, but warming above baseline temperature is blocked by a b-andre-nergic blocker in the blood supply. Thus, autonomic voluntary control was demonstrated. Finger warming is a commonly used biofeedback modality.

One particular application of finger warming has a solid scientific basis: Reynauds phenomenon is a multifaceted disorder that produces symptoms of vasospasm in the extremities. Hand warming against a cold challenge appears to be a viable treatment for this serious and sometimes severe problem.

Do Not Panic

Do Not Panic

This guide Don't Panic has tips and additional information on what you should do when you are experiencing an anxiety or panic attack. With so much going on in the world today with taking care of your family, working full time, dealing with office politics and other things, you could experience a serious meltdown. All of these things could at one point cause you to stress out and snap.

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