QUESTION: I get a headache when I do physical activity with my mouth closed and when I work out with the Relaxator set to a high resistance (hard to exhale).
ANSWER: This headache often occurs in the frontal lobe, and the main reason is likely due to increased pressure in the nasal cavities and sinuses. This kind of headache is usually transient and decreases and disappears as your body gets used to the Relaxator. It also usually disappears if you a) decrease the intensity during your workout, b) decrease the prolonged exhalation so that the pressure in the sinuses decreases, or c) decrease the resistance of the Relaxator so that it is easier to exhale through it.