The present invention provides a real-time chest expansion measuring system (100) comprising a sensor unit (102) and a display unit (104). The sensor unit (102) is having a belt (105) with a sensing means (106), a first processor (108), a first radio module (110), a battery (112) and a charger (114). The display unit (104) is having a second processor (116), a second radio module (118), a user interface and a memory means (122). The sensing means (106) is configured to sense chest expansion of a person and provide corresponding data to the first processor (108). The first processor (108) is configured to analyze and process the data in real-time. Further, the first radio module (110) transmits the processed data to the display unit (104). The second processor (116) receives the processed data through the second radio module (118) and the user interface displays the processed data in real-time. FIG. 1
