Show SHORT WINDED chhy some faraon become breath lr severe Exer clif breathing consists of two alternating processes In breathing which the muscles of the cheet their part and athing la the elasticity of the lungs and weight of the cheat force out alac number of breaths which the age Is one to every three or four pulse beats in ordinary breathing on ly about one sixth of the air in the lungs 1 renewed but in exercise the amount Is considerably increased and the number of breaths multiplied in disease di seas such ae reduction of lung area the blood Is in danger of becom ing overcharged over charged alth carbonic add and the lungs struggle to get rid of this and to bring la more oxygen exercise causes a similar change and if of the right sort and not too long continued the circulation and breathing are quickened and the result ie good in ere exercise euca as long con tinned peed trial the quickened breathing can no longer cope with its task so carbonic acid accumulates faster than the heart and the lungs can deal with it and breathlessness re aults |