A board showing a drawn, human face showing how to inhale and exhale.
A drawing of two heads with words coming out of their mouths.
Differentiation of inhale  and exhale process is explained by a drawing.
A drawing of a man breathing in and out on a whiteboard.
A whiteboard contains illustrations of a person breathing.
A human drawing is breathing in and breathing out.
The board depicts an inhale and exhale expression.
A drawing of two faces breathing in and out.¬
Handdrawn image of two side profiles inhaling and exhaling.
Two faces on a whiteboard of exhaling and inhaling.