The singer-turned movie star told ET Online that he was losing consciousness as a result of the cold as they filmed on a frozen lake - when Amy roused him with a smacker.
He said: "We shot the scene in the Blue Ridge Mountains and the water was just below 50 degrees. It was freezing.
"Amy actually saved my life. Unbeknownst to me, I was turning blue and couldn't process a thought, so she actually saved my life. I owe Amy Adams my life."
And Amy added: "Some people call it mouth-to-mouth, some people call it kissing - any way, it's nice work if you can get it!"
Trouble With The Curve also stars Clint Eastwood and arrives in UK cinemas on 30 November.
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