Possible Clues:

• Husband richer after leaving wife in a better position financially
• Fitter needs wherewithal when struggling to remove both weights
• In lesser need of a doctor
• Try to keep lithe, training to be so?
• The man needing to change -- hospital one enters, becoming this?
• More wholesome cure by Doctor Reith
• Before trial he bungled, that man could be in better shape
• Amazingly lithe hare, less prone to disease
• Fitter's the man to change - call in
• More in the pink