A member asked:

Is there any harm in donating blood after exercising? exercise includes a mix of cardio & weights . no health problems of any sort.

7 doctors weighed in across 2 answers

No, just make sure: You are well hydrated before donating blood.

Answered 12/21/2013

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Dr. Donald Alves answered

Specializes in Emergency Medicine

None: While you should not go from the donation center to the gym (follow the nurse's instructions and take it easy for the rest of the day), there is no significant (or usually even noticeable) change in your level of function after a couple of donations and you are used to the experience and how your body responds.

Answered 3/15/2014

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Why does blood harm the brain (e.g. hemorrhaging)?

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