Table of Contents
Blow out as hard and fast as you can. You want to move the marker as far as you can with your breath, so concentrate on exhaling forcefully and quickly.

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Review Date: 05/01/2011
Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc., and Denis
Hadjiliadis, MD, Assistant Professor of Medicine, Division of
Pulmonary, Allergy and Critical Care, University of Pennsylvania,
Philadelphia, PA.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
