There is discussion about exercise here, though it says the lag may get longer...so ?

https://diatribe.org/exercise-well-...-strategies#lag

Also if you want more on CGMs, Marty posted a DRAFT of an article in Google Docs. This focused on how to lose weight with a CGM, not exercise, but adding it here anyway. Lots of info on brands.

https://docs.google.com/document/d/...gEdUpnCdbd5e98#