help with "if else"

  {

    int runningTotal = 0;
    bool keepGoing = true;

    while (keepGoing){


      // Prompt the user for minutes exercised... 
      Console.Write("Enter How Many Minutes You Exercised or type quit to exit: ");


      string entry = Console.ReadLine();

      if (entry == "quit"){

        keepGoing = false;
      }        

      else
    {          
      int minutes = int.Parse(entry);
      }


      if (minutes <= 10){
      Console.WriteLine("Well it's better than nothing, am I right?");
      }
      else if (minutes <= 30){
      Console.WriteLine("Way to go hot stuff!");
      }

     else if (minutes <= 60){
      Console.WriteLine("Wow, you must be a ninja warrior in training!");
      }

      else if (minutes <= 80){
      Console.WriteLine("Okay, now you're just showing off!");
      }

      else if (minutes <= 100){
      Console.WriteLine("Just stop before you hurt yourself!");
      }

      else if (minutes <= 120){
      Console.WriteLine("What you are doing can not be healthy!");
      }

      else if (minutes <= 240){
      Console.WriteLine("Please stop now...");
      }

      else if (minutes <= 260){
      Console.WriteLine("I am seriously trying to help you, stop exercising!");
      }

      else if (minutes <= 280){
      Console.WriteLine("I am starting to run out of things to say to you...");
      }

      else if (minutes <= 300){
      Console.WriteLine();
      }

      else if (minutes == 666){
      Console.WriteLine("You have dialed DOOM services please stand by....*Hold music that will never end*");
      }
      else {Console.WriteLine("I understand that you are not going to listen to me so i give up on you I have plenty of other people to help get fit... This is you fault... I tried to warn you... but NO... you haaad to do more exercise... Good BYE!");}


      // Add minutes exercised to a total...
       runningTotal = runningTotal + minutes;

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

      } 
                  // Repeat until the user quits.
        }



      }                
    }