It won't work. It Doesn't loop. What's wrong

        int runningTotal = 0;
        bool keepGoing = true;

        while(keepGoing)
        {
                // Prompt the user for minutes exercised 

            Console.Write("Enter how many times you exercised or type \"quit\" to exit: ");
            string entry = Console.ReadLine();

            if(entry == "quit")
            {
                keepGoing = false;
            }
            else
            {

                // Add minutes exercised to total

                int minutes = int.Parse(entry);
                runningTotal = runningTotal + minutes;

                // Display total minutes exercised to the screen
                Console.WriteLine("You've entered " + runningTotal + " minutes");

                // Repeat until the user quits 

            }

        }

        Console.WriteLine("Goodbye");

    }
}