From Longman Dictionary of Contemporary Englishbreathe deeplybreathe deeplyto take a large breath of air into your lungs → deeply
Examples from the Corpus
breathe deeply• I leaned over and breathed deeply.• I opened my eyes and gulped, breathing deeply.• Take a daily walk in the park and breathe deeply.• Better yet, you can breathe deeply and not choke on secondhand smoke.• I stopped, breathed deeply, and smiled as sweet air filled my lungs.• She sat for a while, becoming quieter, breathing deeply, ceasing to tremble.• Quinn breathed deeply, exhaled with a trembling chest, and breathed in again.• Exhorting him to breathe deeply they paraded him up and down beside the wire fence. 