A Second Chance (2005)

Edward is a frail, 78-year-old man who discovers the fountain of youth: an idyllic, crystal-clear spring in the wilderness of north-central Florida. After a short swim, he emerges from the water as a 28-year-old. Elated, Edward goes home and tries to convince his 75-year-old wife to do the same. But to his consternation, she refuses, not wanting to go against the natural flow of things.