private static bool ShowUserExercises(User user, ExerciseType exerciseType)
        {
            List <Exercise> exercises = exerciseController.GetUserExercises(user, exerciseType);

            Console.WriteLine("[Список упражнений]");

            if (exercises.Count < 1)
            {
                Console.WriteLine("Пусто.");

                return(true);
            }

            for (int index = 0; index < exercises.Count; index++)
            {
                int number = index + 1;

                Exercise exercise = exercises[index];

                string exerciseAddedDate = exercise.Added.ToString("d");

                switch (exerciseType)
                {
                case ExerciseType.ForAllTime:
                    Console.WriteLine($"{number}.{exercise.Name} - {exerciseAddedDate}");
                    break;

                case ExerciseType.ForToday:
                    Console.WriteLine($"{number}.{exercise.Name}");
                    break;
                }
            }

            Console.WriteLine();

            return(false);
        }