If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.
Maybe it's not, but it's super-conspicuous and might be useful for reputation-building. Also, if you want to practice dealing with blood draws in a not-being-sick context it could be useful. (I haven't donated yet though because age restrictions.)