Jill wanted to get in shape, so she started walking 30 minutes every day. At first it was hard, but now it is easy. Which of the following recommendations should you NOT give Jill? She should keep doing the same thing and celebrate that she reached her goal. She should try walking the same route but now try walking faster. She should now try walking 30 minutes along a hilly route. She should now try walking for 10 minutes, then running for 10 minutes, then walking for 10 minutes