The Oxygen Advantage: The Simple, Scientifically Proven Breathing Techniques for a Healthier, Slimmer, Faster, and Fitter You

by Patrick McKeown

disappear. It’s important to note that you may still be susceptible to certain symptoms even when you have achieved a BOLT score of 20 seconds when exposed to a trigger; a BOLT score of 40 seconds is needed to fully eliminate your asthma symptoms.