Each crew member displays different symptoms of aging: Captain Kirk suffers from short-term memory loss and arthritis, Spock becomes hypersensitive to temperature changes, McCoy becomes more moody and irritable, Galway suffers from hearing loss, and Scotty finds that he is always tired. See more
Give some more blood, Chekov. The needle won't hurt, Chekov. Take off your shirt, Chekov. Roll over, Chekov. Breathe deeply, Chekov. Blood sample, Chekov. Marrow sample, Chekov. Skin sample, Chekov. If-if I live long enough, I'm going to run out of samples.
Oh, yes, I'll live, but I won't enjoy it.