If you have a blocked nose, you may find it difficult to breathe. To avoid that, remember to clear your nose with with adapted nasal solutions (physiological serum, sea water spray…), before going to bed. Once you have cleaned your nose, blow your nose. Using a nasal wash has the advantage of cleansing your nasal airways, which will relieve respiratory discomfort. This is the main problem preventing us from sleeping soundly when we have a cold. It also helps to drain out mucus from the nasal mucosa and remove pathogens (viruses, bacteria).