A simple, objective measure of breathlessness and of chemosensitivity to carbon dioxide. The breath is held after a normal exhalation until the first definite desire to breathe. The time of the breath hold is counted in seconds. This gives you your BOLT score. A BOLT score lower than 25 seconds indicates a stronger ventilatory response to CO2 and dysfunctional breathing. During the normal respiratory cycle, carbon dioxide accumulates in the blood. When the body is overly sensitive to the build-up of carbon dioxide, breathing becomes harder during rest, physical exercise and in sleep apnea patients. This is because CO2 plays an important role in respiratory biochemistry, providing the primary stimulus to breathe and facilitating the release of oxygen from the red blood cells to the tissues and organs. To obtain an accurate measurement, it’s best to rest for ten minutes before measuring your BOLT score. Read the instructions carefully first and have a timer on hand. You can measure your BOLT now: Take a normal breath in through your nose and allow a normal breath out through your nose. Hold your nose with your fingers to prevent air from entering your lungs. Time the number of seconds until you feel the first definite desire to breathe, or the first stresses of your body urging you to breathe. These sensations may include the need to swallow or a constriction of the airways. You may also feel the first involuntary contractions of your breathing muscles in your abdomen or throat as the body gives the message to resume breathing. Release your nose, stop the timer, and breathe in through your nose. Record your BOLT Score and post in comments 🌬️