What to expect during a BOD POD test?

The client’s submission for the BOD POD testing is relatively easy. For a short measurement period, just sit comfortably and quietly inside the BOD POD, no talking or laughing. Sounds of the valves opening and closing can be heard, but a majority of the people are unconscious of the minor pressure changes that transpire during a BOD POD test. Some people noticed the sensation of going from the first to the second floor in an elevator.