(Strip Number 535, Original Publication Date, 9 January 1984)
Panel 1: We start things off with Mike and Lizzie looking into the kitchen as Elly howls in pain. Lizzie asks Mike whatsa matter wif Mom.
Panel 2: Mike tells her that Mom went to some kinda fitness class last night.
Panel 3: John asks Elly if she's feeling a little stiff this morning. Since she looks as if her spinal column has been replaced with a rebar, I'd say she is.
Summary: We can expect comments on Gocomics and on the strip itself about other people who did too much too quickly like Elly; what we can't expect is to have those comments comment on how dumb that is.