The body tester can provide very detailed data and analysis. Including body composition, muscle strength, cardiopulmonary function and other parameters. These data can help you better understand your physical condition. And make a reasonable exercise plan. Coach assessment can consider your physical condition, exercise goals and personal needs more comprehensively. And make a personalized exercise plan for you according to these factors. The coach can also adjust the plan in time during training. To make sure you get the best results. But ... Coach evaluation needs more time and money.