What is Pulmonary Fibrosis? Pulmonary fibrosis is when lung tissue becomes damaged and scarred. Over time, the damaged areas of your lungs become thickened and stiff due to scar tissue and this makes it harder for oxygen to get from your lungs into your blood.
When is it abnormal? Everyone has days when they feel sleepier than usual. We have all experienced the consequences of “pulling an all-nighter”. However, if you feel sleepy often during the day or you regularly struggle to stay awake while sitting on the couch or at work