Developing an asthma action plan will help you keep your asthma under control. This type of plan is usually broken into three sections: the green zone, the yellow zone, and the red zone. If you have no cough, wheeze, shortness of breath, or chest tightness, you are in the green zone. You should take your medications as prescribed and continue with your usual activities. If you are coughing, wheezing, or experiencing chest tightness or shortness of breath, you are in the yellow zone. People in the yellow zone usually take quick-acting medications and continue their daily asthma medications. The red zone is the most dangerous for someone who has asthma. If you are in this zone, you are very short of breath and your quick-acting medications are not helping. Your action plan might tell you to take another medication or call your provider if you enter the red zone.