Is true that blood donation is well-mannered for vigour?

A friend suggested it to me as my whole body seems to be so tense up and I hold this feeling of tightness all over. Please advise.
Answers:
yeah I'd recommend against blood donation if you are stressed...as I got really sick one time after donating plasma Source(s): plasma donor for many years....
http://bloodbanker.com
No, get a chafe. Don't give blood if you feel ill, as you will probably miss out at the least.

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