Update to #11 Donating Blood
So it turns out you can get a pretty nasty looking bruise if you donate blood so I'd recommend doing this when its cold out...this is not a good look for short sleeves:
My arm got considerably nastier than what was shown above...turns out that maybe chugging 48 oz of water was overkill...also if they tell you to leave the bandage on for at least 4 hours, then leave it on for 4 hours! Even if its itchy and you want to take it off after hour 2 or something...not that I know this from personal experience or anything.
Got miserably sick with a cold the next day after donating so was sick and my arm looked like this
5 days later!!!
10 days later!!!!!!!