"How many calories are there in the fitness record of iPhone * * * refers to the number of calories you have been * * * consuming when you use the fitness record function of iPhone. This number is dynamic, and it will be updated when you engage in fitness, sports, exercise and other activities. To check the total calories, you can open the "Health" app of iPhone, and in the "Fitness" option, you can find all your exercise data, including the length, distance, speed and calories burned in each exercise.