My vote is precious, but I'm taking a chance on our youth
I can't make up my mind. It reminds me of my friend who used to go for clinical drug trials. The guinea pig didn't exactly donate his body to science while he was still alive. He was paid.
And, as any young lad would, he spent all of his drug trial money on drink and drink for women. There was a scare though when, for a while, the pal thought he might be James Connolly, but otherwise he was fine - and his hair did grow back after six months.
My friend was smarter than most of the doctors. Although maybe he wasn't, because none of the doctors ever went for the tests, but he did take great pleasure in disrupting their testing.