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Hemoglobin does all the fetching and carrying in respect of the O2 and C02 and lives for about 120 day. Now when pushed to the limit does the hemoglobin live longer or die sooner? If the life span of hemoglobin changes due to training hard and the lack of training do the glands/organs that produce hemoglobin have a memory of what “type” of hemoglobin to produces when we are or ant in training?
Or have I missed the point……….