According to the Guardian/BBC/Telegraph and Financial Times -- "He's sitting up in bed!"
Yes, once a man can sit up in bed, he's a-okay. A vertical posture on the old mattress is what modern doctors use to confirm a diagnosis of wellness.
"How's your patient, old chum?"
"Damn bugger is lying down."
"Dashed bad luck. I expect you tried everything to get him into an upright position?"
"Extra pillows and a couple of sturdy nurses."
"I believe a ferret in the pyjamas has been known to work."
"I'm a firm believer in the old hot cup of Bovril."
"As a drink?"
"No, as an enema."