A system and method to monitor, guide, and evaluate breathing, with respect to user definable breathing patterns, sequences, and preexisting breathing exercises, utilizing posture and diaphragm sensor signals and a method to process thereof, composed of hardware and software components. The application describes a system which monitors the output signals of sensors as part of a breath training device worn by a user for measuring the state of a users posture and diaphragm to derive a filtered breath signal. This is obtained using one or more sensors, a microcontroller to receive, process, and transmit sensor signal data, a breath training program which receives, calibrates, interprets, evaluates, and provides feedback on said sensor signal data, utilizing a set of breathing algorithms. The breath training program allows defining a breath pattern by specifying its parameters such as inhalation time, retention, inhalation depth, exhalation time, and constraints on such parameters, and to monitor and evaluate a users breathing with respect to such a pattern, providing several visually guided feedback methods such as a graph on a timeline displaying evaluation indicators during each phase of a breath, or a game where the user guides a breath level game element through inhalation and exhalation zones to adhere to such a breath pattern.
