There can be little doubt that prisoners generally have taken a lot from society and often have given very little back. A few years ago this led me to start thinking about ways prisoners like myself could do something positive. That was when I hit upon the idea of donating blood.
… and a good way to find out if you have enough nutrients in your blood too. Good luck, lovely idea.
Funnily enough a mate here had a blood test done recently and (despite being vegan and on a very lacking prison diet) he had more than enough nutrients of all kinds. I haven’t quite worked out how yet, but having seen what he eats, I think they got his blood mixed up with someone else’s!