Blood donations that we are not the only one. But we are also a "receiver" that caused providing our own. The more we give blood to his breathing. It is our very life with.
Blood donation is not the only provider but also as the "recipient" in arising from our own. The more we give blood to resuscitate his equals in our life.
The blood donors, we do not have to be the only one, but we are also a "receiving" caused by the blood of our own, the more we continue to breath. He was to extend the life of our more.