[Idiom] sweat to the oldies (as well as the newies)

[sitifan]

There's a problem, though. All this activity had no effect on obesity at all. Obesity increased relentlessly, even as we sweated to the oldies.
(The Obesity Code, by Jason Fung, page 49)
We sweated to the Oldies as well as the Newies, as the demon took turns possessing the zombie corpses, trying each on for size.
https://books.google.com.tw/books?i...q="sweated to the oldies as well as "&f=false

Does the phrase "sweat to the oldies (as well as the newies)" mean "sweat heavily"?

 

[tedmc]

No, I think it refers to doing aerobic dance to music of different genres, old or new.

 

[Charlie Bernstein]

Right. Oldies are old songs.

Newies are new things. In this context, it's new songs.