Jim Halpert: You work here. Don’t you want good insurance?
Dwight Schrute: Don’t need it. Never been sick. Perfect immune system.
Jim Halpert: Okay, well, if you’ve never been sick, then you don’t have any antibodies.
Dwight Schrute: I don’t need them. Superior genes. I’m a Schrute. And superior brain power. Through concentration, I can raise and lower my cholesterol at will.
Pam Beesly: Why would you wanna raise your cholesterol?
Dwight Schrute: So I can lower it.
From The Office – Season 1 Episode 3: ‘Health Care’ (1×03)