A method for monitoring breath is provided, comprising: measuring one or more attributes of airflow through an input device, by a flow sensor within the input device, of air blown into said input device by an expelling action of a user； transmitting the attributes of airflow from the input device to a processing device, including a processor and communication terminal； communicating, via the communication terminal, a first state output to the user while the air is blown into said input device； and determining, by the processor of the processing device, whether each of the attributes of airflow is within a respective threshold range. If a respective threshold range is met, the communication terminal communicates a second state output to the user.
