Jasmin tries out a new lung training tool that combines a "calibrated balloon" claimed to provide a 1/2 psi load (actually closer to 1/4 psi), with three bypass holes to allow six levels of airflow through the simulated musical instrument.

Jasmin tries out a new lung training tool that combines a "calibrated balloon" claimed to provide a 1/2 psi load (actually closer to 1/4 psi), with three bypass holes to allow six levels of airflow through the simulated musical instrument.