atmen
to breathe
To draw air into the lungs and expel it again in order to supply the body with oxygen.
Nach dem schnellen Lauf musste er erst einmal tief atmen.
After the fast run, he first had to breathe deeply.

to breathe
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to breathe
To draw air into the lungs and expel it again in order to supply the body with oxygen.
Nach dem schnellen Lauf musste er erst einmal tief atmen.
After the fast run, he first had to breathe deeply.

'Atmen' (to breathe) is the base verb for many important verbs with prefixes that describe a direction or type of breathing. Examples are 'einatmen' (to breathe in), 'ausatmen' (to breathe out), and 'durchatmen' (often to breathe a sigh of relief).
Bitte atmen Sie tief ein und halten Sie die Luft an.
Please breathe in deeply and hold your breath.
To describe the manner of breathing, 'atmen' (to breathe) is often combined with adverbs. Common combinations are 'tief atmen' (to breathe deeply), 'schwer atmen' (to breathe heavily), 'ruhig atmen' (to breathe calmly), or 'flach atmen' (to breathe shallowly).
Der Patient atmete nach der Anstrengung sehr schwer.
The patient was breathing very heavily after the exertion.
In the figurative meaning, 'atmen' (to breathe) is not used for living beings, but for places or things. The subject is then usually a building, a room, or a landscape that radiates a particular atmosphere.
Die alte Bibliothek atmet den Geist vergangener Jahrhunderte.
The old library breathes the spirit of past centuries.
to blow
'blasen' and 'atmen' both have to do with air, but they do not describe the same thing. 'atmen' is the normal process of the body: air goes into the lungs and back out again. 'blasen' means intentionally, and often forcefully, moving air from the mouth or with a device in a particular direction. Learners may confuse the words because in both cases air can come out of the mouth. The important difference is: you need 'atmen' to live; you do 'blasen' with a goal, for example to blow out a candle or blow dust away.

Nach dem schnellen Lauf musste sie tief atmen.
After the fast run, she had to breathe deeply.
Max bläst vorsichtig auf die heiße Suppe.
Max blows carefully on the hot soup.