How do the guests from "Dr. Heidegger's Experiment" react to their physical transformations?

Dr. Heidegger's guests are delighted with their physical transformations, and they immediately begin to behave like their younger selves.

Each one of them made mistakes in their youth, and they are convinced, before drinking the potion, that they would not make the same mistakes if they were given an elixir of immortality after a long lifetime. However, the fountain of youth brings out the self-same youthful flaws. Mr Medbourne (a once prosperous merchant who lost...

Dr. Heidegger's guests are delighted with their physical transformations, and they immediately begin to behave like their younger selves.

Each one of them made mistakes in their youth, and they are convinced, before drinking the potion, that they would not make the same mistakes if they were given an elixir of immortality after a long lifetime. However, the fountain of youth brings out the self-same youthful flaws. Mr Medbourne (a once prosperous merchant who lost everything through wild speculation) reacts by thinking about money. Colonel Killigrew (who wasted his life in the pursuits of sinful pleasures that ravaged his soul and body) sings a drinking song and flirts with the Widow Wycherly. Mr Gascoigne (a ruined politician) becomes preoccupied with political matters and begins discoursing about political issues to no one in particular. Mrs Wycherly (once a beautiful woman who now lives in deep seclusion) becomes transfixed by her own reflection.

Recall also that all three men had, in their youth, vied for the hand of Clara Wycherly. As a result, when their youth is (temporarily) restored, they also begin competing for her affections once again.