Gave blood today, mildly amusing as I was presented with what they called an award for donating 25 times. In fact, it was a very tiny badge in a very large box! I actually think its more like 35 times as they switched from a paper based system some years ago to a computerised one, and I don’t think my original count was added on.
anyway, 25 times or 35 times, or 3 times … I think everyone should try it. its not difficult or particularly painful, and hopefully it makes a difference.